HRABOVE, Ukraine (AP) — Armed rebels forced emergency workers to hand over all 196 bodies recovered from the Malaysia Airlines crash site and had them loaded Sunday onto refrigerated train cars bound for a rebel-held city, Ukrainian officials and monitors said.

The surprising, rapid-fire developments Sunday morning came after a wave of international outrage over how the bodies of plane crash victims were being handled and amid fears that the armed rebels who control the territory where the plane came down could be tampering with the evidence.

Ukraine and the separatists accuse each other of firing a surface-to-air missile Thursday at Malaysia Airlines Flight 17 as it flew from Amsterdam to Kuala Lumpur some 33,000 feet (10,000 meters) above the battlefields of eastern Ukraine. Both deny shooting down the plane. All those onboard the flight — 283 passengers and 15 crew — were killed.

Ukraine says Russia has been sending sophisticated arms to the rebels, a charge that Moscow denies.

The U.S. embassy in Kiev issued a strong statement pointing to Russian complicity in arming the rebels, saying it has concluded "that Flight MH17 was likely downed by a SA-11 surface-to-air missile from separatist-controlled territory in eastern Ukraine." It said over the weekend of July 12-13, "Russia sent a convoy of military equipment with up to 150 vehicles, including tanks armored personnel carriers artillery, and multiple rockets launchers" to the separatists. The statement also said Russia was training separatist fighters in southwest Russia, including on air defense systems.

The rebels have been strictly limiting the movements of international monitors and journalists at the crash site, which is near the Russian border, and Ukraine's Emergency Ministry said its workers were laboring under duress, overseen by the armed rebels.

Associated Press journalists saw reeking bodies baking in the summer heat Saturday, piled into body bags by the side of the road or still sprawled where they landed in the verdant farmland in eastern Ukraine after their plane was shot out of the sky.

By Sunday morning, AP journalists saw no bodies and no armed rebels at the crash site. Emergency workers were searching the sprawling fields only for body parts.

It was immediately not clear Sunday if the rebels and the Ukrainian government were working together or at odds with each other on recovering the bodies — and from their comments, many of officials didn't appear to know either.

Separatists were not immediately available to comment Sunday. Despite the restrictions seen by journalists and observers at the crash site, separatist leader Alexander Borodai insisted Saturday the rebels have not interfered with the work of observers.

Nataliya Khuruzhaya, a duty officer at the train station in Torez, 15 kilometers (9 miles) from the crash site, said she saw emergency workers loading plane victims' bodies Sunday morning into five sealed, refrigerated train cars.

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An armed man looks at charred debris at the crash site of Malaysia Airlines Flight 17 near the villa …

She said the train was scheduled to head to the town of Ilovaysk, 35 kilometers (22 miles) further east toward the Russian border, but no instructions had been given about when it would leave or any possible destinations beyond Ilovaysk.

Russian news agencies said the bodies were heading to the rebel stronghold of Donetsk. Ukrainian officials say they expected to have the bodies eventually delivered to government-held city of Kharkiv, but it's unclear if the rebels will agree to do so.

Vasily Khoma, deputy of governor of the Kharkiv region where Ukraine has set up a crisis center to handle the disaster, said the Ukrainian state railway company had provided the refrigerated train cars. Kharkiv is 300 kilometers (185 miles) north of the crash site.

He said no information was available on when airplane parts would be brought to the city and that the priority now was on recovering bodies. He said a mobile lab to handle DNA analysis was being delivered from Dnipropetrovsk.

Residents in Kharkov have been inundating a special call center to offer their services as volunteers. Ten hotels in Kharkiv have said they will provide free rooms for relatives of the victims.

Earlier, Ukrainian Emergency Ministry spokeswoman Nataliya Bystro said workers at the crash site were forced to hand over the 196 bodies they had recovered to the armed rebels.

"Where they took the bodies — we don't know," Bystro told the AP, adding she had no information about the other 102 victims' bodies.

However, Michael Bociurkiw, a spokesman for monitors from the Organization for Security and Cooperation in Europe, said some bodies have likely been incinerated without a trace.

"We're looking at the field where the engines have come down. This was the area which was exposed to the most intense heat. We do not see any bodies here. It appears that some have been vaporized," he told reporters in Kiev, speaking via phone from the crash site Sunday.

Alexander Pilyushny, an emergency worker combing the crash site for body parts Sunday morning, told the AP it took the rebels several hours Saturday to cart away the bodies. He said he and other workers had no choice but to hand over the bodies.

"They are armed and we are not," Pilyushny said.

In a blistering article for the Sunday Times, British Prime Minister David Cameron called the attack a "direct result of Russia destabilizing a sovereign state, violating its territorial integrity, backing thuggish militias and training and arming them."

"We must turn this moment of outrage into a moment of action," he wrote.

In a coded rebuke of German Chancellor Angela Merkel and other European leaders who have blocked efforts to impose tougher sanctions on Russian President Vladimir Putin for Russia's actions in Ukraine, Cameron said Europe must now "respond robustly."

"For too long, there has been a reluctance on the part of too many European countries to face up to the implications of what is happening in eastern Ukraine," Cameron wrote.

An Associated Press journalist saw a Buk missile launcher in rebel-held territory close to the crash site Thursday just hours before the plane was brought down.

Putin and Merkel agreed Saturday in a phone call that an independent commission led by the International Civil Aviation Organization should be granted swift access to the crash site.

Dutch Foreign Minister Frans Timmermans, speaking in Kiev, demanded that the culprits be found.

"Once we have the proof, we will not stop until the people are brought to justice," he said.

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Peter Leonard in Kiev; Nataliya Vasilyeva in Moscow; Nicholas Garriga in Hrabove, Ukraine; Lucian Kim in Kharkiv; Danica Kirka in London and Lolita C. Baldor in Washington contributed to this report.

GAZA CITY, Gaza Strip (AP) — The first major ground battle in two weeks of Israel-Hamas fighting exacted a steep price Sunday: It killed 65 Palestinians and 13 Israeli soldiers and forced thousands of terrified Palestinian civilians to flee their neighborhood, reportedly used to launch rockets at Israel and now devastated by the fighting.

Israeli Prime Minister Benjamin Netanyahu said the offensive would continue "as long as necessary" to end attacks from Gaza on Israeli civilians.

But Hamas seems defiant, international cease-fire efforts are stalled, and international criticism is becoming more vocal as the death toll among Palestinian civilians rises.

U.N. chief Ban Ki-moon called Israel's latest incursion "atrocious," and said it must do far more to protect civilians. The U.N. Security Council was holding an emergency session Sunday night at the request of council member Jordan on the situation in Gaza.

In Israel, public opinion will struggle to tolerate rising military losses in an open-ended campaign. Already, Sunday's deaths marked the highest number of soldiers killed on a single day since Israel's war in Lebanon in 2006.

The ferocious battle in Gaza City's Shijaiyah neighborhood came on the third day of Israel's ground offensive, which had been preceded by a 10-day air campaign.

Raw: Gaza City Shelling AttackPlay Video

In all, at least 432 Palestinians were killed and more than 3,000 wounded in the past two weeks. The overall death toll on the Israeli side rose to 20, including 18 soldiers, along with dozens of wounded troops, during that period.

On Sunday evening, Hamas spokesman Mushir al-Masri in Gaza claimed his group had captured an Israeli soldier. An announcement on Gaza TV of the soldier's capture set off celebration in the streets of Gaza City.

But the claim could not immediately be verified, and the Israeli military said it was investigating the report. "There's no kidnapped Israeli soldier," Israel's ambassador to the U.N., Ron Prosor, told reporters Sunday night.

Hamas has made similar claims of capturing Israelis in the past that were not true. For Israelis, a captured soldier would be a nightmare scenario. Hamas-allied militants seized an Israeli soldier in a cross-border raid in 2006 and held him captive in Gaza until Israel traded more than 1,000 Palestinian prisoners, some of whom were involved in grisly killings, for his return in 2011.

Sunday's battle began when Israeli troops backed by tanks entered the densely populated Shijaiyah district just after midnight Sunday. They were met by a "huge" level of resistance by Hamas fighters who fired anti-tank missiles, rocket-propelled grenades and automatic weapons from houses and buildings, said Lt. Col. Peter Lerner, an army spokesman.

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Israeli soldiers of the Paratroopers Brigade mourn over the grave of Sgt. Bnaya Rubel during his fun …

Residents said they came under intense Israeli tank fire.

"The gate of hell has opened, and shrapnel came through the windows," Shijaiyah resident Jawad Hassanain said by phone. He and his family fled to a nearby building after their house shook from explosions.

After daybreak, the extent of the devastation slowly became apparent: At least 65 Palestinians had been killed and nearly 300 wounded, Gaza health officials said, while dozens of homes badly damaged or destroyed.

Casualties were rushed to Gaza's central Shifa Hospital. Wailing parents, some covered with blood or dust from debris, carried children peppered by shrapnel, and the emergency room quickly overflowed, forcing doctors to treat some patients in a hallway.

During a brief Red Cross-brokered lull later in the day, rescue workers toured the neighborhood to retrieve the dead, pulling bodies from the rubble of homes.

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Smoke and flare of an explosion rise after an Israeli missile hit the Shijaiyah neighborhood in Gaza …

In a last sweep of the area on Sunday afternoon, rescue workers heard the faint voice of a woman in the rubble of a house.

"I'm here with my husband and niece," the woman said, adding that there were also three bodies near her. "I'm here under the shop. God please, I can't breathe."

In the incident witnessed by Associated Press journalists, rescue workers tried to organize a bulldozer, but the situation was deemed too dangerous and the crew left. Later, the rescue workers returned with a bulldozer, after coordination with Israeli forces through the Red Crescent, and pulled the three from the rubble, said Said Hamam, a member of the rescue services.

The 13 Israeli soldiers were killed in several separate incidents in Shijaiya, including gun battles and rocket attacks. In the deadliest, Gaza fighters detonated a bomb near an armored personnel carrier, killing seven soldiers inside, the army said. In another incident, three soldiers were killed when they became trapped in a burning building, it said.

Despite the losses, the army chief, Lt. Gen. Benny Gantz, said Israel intends escalate the operation. Gaza residents received automated phone calls late Sunday, warning them to evacuate refugee camps in the center of the Gaza Strip.

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A Palestinian man helps a wounded woman in front of the Al Mughrabi family building following an Isr …

Israel had launched the campaign to hurt Hamas' ability to fire rockets and to destroy tunnels dug by the militants to sneak into Israel to carry out attacks.

Shijaiyah was targeted as a Hamas stronghold and because 8 percent of more than 1,700 rockets fired at Israel since July 8 were launched from there, said Lerner.

The military said that since the beginning of ground operation late last week, it has killed 110 Gaza fighters and targeted more than 1,000 sites linked to militants. Soldiers also exposed 14 tunnels, all interconnected and leading toward Israel, and detonated six of them, including one with a length of 1.2 kilometers and an access point within a house, the army said.

"It's like the Underground, the Metro or the subway," said Lerner, the army spokesman, referring to the tunnel system.

The first days of the current ground offensive were in marked contrast to Israel's last major invasion of Gaza in January 2009, known in Israel as Cast Lead, when Hamas fighters rarely engaged Israeli forces.

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A Palestinian wheels an elderly woman as they flee their homes in the Gaza's Shijaiyah neighborh …

Now, Gaza's militants seem better armed, including with anti-tank rockets.

"I see an escalation in weaponry," Amos Yadlin, a former Israeli military intelligence chief, told Israel TV's Channel 10. "This isn't the same weaponry as in Cast Lead."

Netanyahu said in nationally televised comments Sunday that the ground campaign is vital to Israel's security because the tunnels could be used for "mega terror attacks and kidnappings," but acknowledged the operation is "full of risks."

Speaking earlier to CNN, Netanyahu said the ultimate goal is to "restore a sustainable quiet" for Israel's citizens. Once that is achieved, he said he hopes to enlist the international community "to demilitarize Gaza," but did not explain what that would entail.

Asked about the mounting number of dead and wounded among Palestinians, he said Israel is only targeting militants.

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Palestinians escort a wounded woman in the emergency room of Shifa hospital in Gaza City, northern G …

"All civilian casualties are unintended by us, but intended by Hamas. They want to pile up as many civilian dead as they can. ... It's gruesome," Netanyahu said. "They use telegenically dead Palestinians for their cause. They want the more dead the better."

Meanwhile, a speedy cease-fire seems elusive, as the U.S. and some of the regional powers disagree on how to resolve the Israel-Hamas conflict.

Hamas rejected Egypt's proposal last week that both sides halt fire and then discuss a possible easing of the Gaza border blockade, enforced by Israel and Egypt since Hamas seized Gaza in 2007.

For Hamas, easing the blockade is key to survival, after an intensified border closure of Gaza by Egypt in the past year drove the movement into a crippling financial crisis. Hamas has insisted on guarantees concerning the blockade before it stops fighting and has demanded that others, including Qatar, join Egypt as a mediator.

U.S. Secretary of State John Kerry sided with Israel and Egypt on Sunday, saying giving in to Hamas' conditions for a cease-fire would mean rewarding terrorism. Kerry told NBC's "Meet The Press" that he will head to the Middle East in coming days to help with cease-fire efforts. He said Israel "has every right in the world to defend itself" from attacks by Hamas militants in Gaza.

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Palestinian medics carry a dead body found under the rubble of a home destroyed by an Israeli strike …

Qatar is seen as more sympathetic to Hamas.

Qatari Foreign Minister Khalid al-Attiya said after a meeting with U.N. chief Ban Ki-moon that it is not important which country achieves the terms of a cease-fire so long as justice is achieved.

"We condemn the acts of aggression that Israel has carried out against the Palestinian people, and most recently the massacre of Shijaiyah today in which most of those killed were children," said al-Attiya.

Ban's had harsh words for Israel's military operation, while reiterating his call for an immediate cease-fire.

"While I was en route to Doha, dozens more civilians, including children, have been killed in Israeli military strikes in the Shijaiyah neighborhood in Gaza," he said.

"I condemn this atrocious action. Israel must exercise maximum restraint and do far more to protect civilians," he said.

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Goldenberg reported from Jerusalem. Associated Press writers Ian Deitch and Yousur Alhlou in Jerusalem, Ibrahim Barzak and Dalton Bennett in Gaza City, Abdullah Rebhy in Doha, Qatar and Aya Batrawy in Dubai, United Arab Emirates contributed to this report.