BUCHA, Ukraine (AP) — Moscow faced a new wave of 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 deliberately at close range.

The images of battered bodies out in the open or in hastily dug graves also led to calls for tougher economic sanctions against the Kremlin, namely a cutoff of fuel imports from Russia.

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 agreement to end the war.

European leaders and the United Nations human rights chief condemned the bloodshed, some of them also branding it genocide, and U.S. President Joe Biden said Russian President Vladimir Putin should face a war crimes trial.

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“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.” The Kremlin has repeatedly rejected allegations of atrocities as fakery on Ukraine’s part.

Lavrov said the mayor of Bucha made no mention of atrocities a day after Russian troops left last week, but two days later scores of bodies were photographed scattered in the streets.

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, northwest of the capital, 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 were spilled by one of the dead.

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

“This is a war of murders, a lot of blood. A lot of civilians are dying,” said Natalia Svitlova, a refugee from Dnipro in eastern Ukraine who fled to Poland. “I don’t understand why this is possible in the 21st century and why no one can stop it.”

Moscow continued to press its offensive in eastern Ukraine, where little news has made it to the outside world since the war began Feb. 24. Russia, in pulling back from the capital, has said its main focus is gaining control the Donbas, the largely Russian-speaking industrial region in the country’s east that includes Mariupol.

European allies, though united in outrage over the aftermath outside Kyiv, appeared split on how to respond.

Poland, which is on Ukraine’s border and has taken in large numbers of refugees, angrily singled out France and Germany for not taking tougher action and urged Europe to quickly wean itself off Russian energy. But Germany said it would stick with a more gradual approach of phasing out coal and oil imports over the next several months.

Western and Ukrainian leaders have accused Russia of war crimes before, and the International Criminal Court’s prosecutor has opened an investigation. But the latest reports ratcheted up the condemnation.

European Union foreign policy chief Josep Borrell said “the Russian authorities are responsible for these atrocities, committed while they had effective control of the area.”

French President Emmanuel Macron said there is “clear evidence of war crimes” in Bucha that demand new measures. “I’m in favor of a new round of sanctions and in particular on coal and gasoline. We need to act,” he said on France-Inter radio.

But Poland’s prime minister, who described Russia under Putin as a “totalitarian-fascist state,” called for actions “that will finally break Putin’s war machine.”

“President Macron, how many times have you negotiated with Putin? What have you achieved? … Would you negotiate with Hitler, with Stalin, with Pol Pot?” Mateusz Morawiecki asked.

The U.S. and its allies have sought to punish Russia for the invasion by imposing sweeping economic sanctions. But they may be reluctant to impose measures that cause further harm to a global economy still recovering from the coronavirus pandemic.

Europe is in a particular bind, since it gets 40% of its gas and 25% of its oil from Russia.

Putin’s Feb. 24 invasion has left thousands of people dead and forced more than 4 million Ukrainians to flee their country.

Putin has said the attack is aimed at eliminating a security threat and has demanded that Ukraine drop its bid to join NATO. Ukraine insists it never posed any threat but has offered to officially declare itself neutral.

While Western officials initially said they believed Putin’s goal was to take Kyiv and install a Kremlin-friendly government, Russian forces faced stiff resistance outside the capital and on other fronts, and have now retreated from some areas.

Britain’s Defense Ministry said Russia continues to flood soldiers and mercenaries from the Wagner military group into the Donbas. It said Russian troops are still trying to take Mariupol, which has seen weeks of heavy fighting and some of the worst suffering of the war.

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Qena reported from Motyzhyn, Ukraine. Yuras Karmanau in Lviv, Ukraine, and Associated Press journalists around the world contributed.

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Follow the AP’s coverage of the war at https://apnews.com/hub/russia-ukraine