BUCHA, Ukraine (AP) — Moscow faced global revulsion and accusations of war crimes Monday after the Russian pullout from the outskirts of Kyiv revealed streets strewn with corpses of what appeared to be civilians, some of whom had seemingly been killed at close range.

The grisly images of battered bodies left out in the open or hastily buried led to calls for tougher sanctions against the Kremlin, namely a cutoff of fuel imports from Russia. Germany reacted by expelling 40 Russian diplomats, and Lithuania threw out its Russian ambassador.

Ukrainian President Volodymyr Zelenskyy left the capital, Kyiv, for his first reported trip since the war began nearly six weeks ago to see for himself what he called the “genocide” and “war crimes” in the town of Bucha, the site of some of the horrors.

“Dead people have been found in barrels, basements, strangled, tortured,” said Zelenskyy, who again called on Russia to move quickly to negotiate an end to the war.

In Bucha, northwest of Kyiv, bodies wrapped in black plastic were piled on one end of a mass grave in a churchyard. Many of the victims had been shot in cars or killed in explosions trying to flee the city, and with the morgue full and the cemetery impossible to reach, it was the only place to keep the dead, Father Andrii Galavin said.

Other European leaders and the United Nations human rights chief condemned the bloodshed, and US President Joe Biden said Russian President Vladimir Putin should face a war crimes trial.

“This guy is brutal, and what’s happening in Bucha is outrageous,” said Biden, who also promised to increase sanctions against Moscow.

Russian Foreign Minister Sergey Lavrov dismissed the scenes outside Kyiv as a “stage-managed anti-Russian provocation.” Kremlin spokesperson Dmitry Peskov said the images contained “signs of video forgery and various fakes.”

Russia similarly rejected previous allegations of atrocities as fabrications on Ukraine’s part.

Ukrainian officials said the bodies of 410 civilians were found in towns around Kyiv that were recaptured from Russian forces in recent days.

In Bucha, Associated Press journalists saw 21 bodies, including a group of nine in civilian clothes who appeared to have been shot at close range. At least two had their hands tied behind their backs. A bag of groceries was spilled by one of the dead.

The full extent of the bloodshed in the Kyiv area has yet to emerge. By all accounts, the horrors in the shattered southern port city of Mariupol are likely to be far worse.