Ukrainian President Volodymyr Zelenskyy said the northeastern city of Izium has become the latest location where the Russians have left behind mass graves.

Zelenskyy said Thursday that Ukrainian authorities have found a mass burial site near Izium in the recently recaptured Kharkiv region.

“Bucha, Mariupol, now, unfortunately, Izium,” Zelenskyy said in his nightly televised address, adding that confirmation would likely come Friday. “Russia leaves death everywhere. And it must be held accountable for it. The world must bring Russia to real responsibility for this war.”

The Associated Press reported that its journalists saw the site in a forest outside Izium on Thursday. A mass grave had a marker saying it contained the bodies of 17 Ukrainian soldiers. It was surrounded by hundreds of individual graves with only crosses to mark them.

Sergei Bolvinov, a senior investigator for Ukrainian police in the Kharkiv region, told Sky News of Britain that a pit with more than 440 bodies was found near Izium after the Russians were driven away. He described the grave as “one of the largest burial sites in any one liberated city.”

TURNING POINT IN UKRAINE WAR:As Russia admits defeat in Kharkiv, Ukraine regains land, confidence

Latest developments: 

►The Biden administration said it will send another $600 million in military aid to Ukraine, trying to boost Kyiv’s counteroffensive with some of the same weapons that have helped defeat Russian forces in parts of the east and south.

►Ukrainian President Volodymyr Zelensky did not sustain any serious injuries when his vehicle was struck by another one early Thursday after a battlefield visit, his spokesman said. The driver of the other vehicle received first aid and was taken away by ambulance, the spokesman said.

►Air raid sirens went off twice in Kyiv while Zelenskyy met Thursday with Ursula von der Leyen, president of the European Commission, who reiterated the EU’s support for Ukraine.

►The U.N. atomic agency’s 35-nation Board of Governors passed a resolution Thursday calling on Russia to immediately end its occupation of the Ukrainian nuclear power plant in Zaporizhzhia, where shelling of the facility and nearby areas in recent weeks heightened fears of a possible radiation disaster.