WASHINGTON, July 20 - U.S. Secretary of State John Kerry laid out what he called overwhelming evidence of Russian complicity in the shooting down of Malaysia Airlines flight MH17 as international horror deepened over the fate of the victims' remains, Reuters reported.

Kerry demanded that Moscow take responsibility for actions of pro-Russian rebels in eastern Ukraine whom Washington suspects of downing the jet with a missile, and expressed disgust at their "grotesque" mishandling of the bodies.

Television images of the rebel-held crash sites, where the remains of victims had lain decomposing in fields among their personal belongings, have turned initial shock and sorrow after Thursday's disaster into anger.

Emotions ran high in the Netherlands, the home country of about two-thirds of the 298 people who died in the Boeing 777. The Dutch foreign minister has said the nation is "furious" to hear bodies were being "dragged around," while relatives and church leaders demanded they be rapidly returned home.

But the departure of dozens of corpses loaded into refrigerated railway wagons was delayed on Sunday as Ukrainian officials and rebels traded blame over why the train had not yet left the war zone, and where or when international investigators would be able to check it.

The U.N. Security Council is scheduled to vote on Monday on a resolution that would condemn the downing of the plane and demands that those responsible be held accountable and that armed groups not compromise the integrity of the crash site.

In an apparent bid to compromise with Moscow, the wording of the resolution, drafted by Australia, was changed to characterize the incident as the "downing" of the flight, instead of "shooting down," according to the final draft obtained by Reuters. Diplomats said it was unclear if Russia would support the final version.

In Washington, Kerry criticized Russian President Vladimir Putin and threatened "additional steps" against Moscow.

"Drunken separatists have been piling bodies into trucks and removing them from the site," he said on NBC television on Sunday. "What's happening is really grotesque and it is contrary to everything President Putin and Russia said they would do."