The office of Ukraine’s prosecutor general said on Saturday that it has learned about the deaths of 24 more children in Mariupol, the southeastern port that was besieged for weeks before Russian forces captured it in mid-May.

In total, the office said that at least 287 children have died since the start of the Russian invasion of Ukraine on February 24. More than 492 have been wounded.

“During the recording of criminal offences, it has become known that 24 more children died in Mariupol, Donetsk region, as a result of the indiscriminate shelling by the Russian military,” the office said on the Telegram messaging app.

“These figures are not final, as work is underway to establish them in places of active hostilities, in the temporarily occupied and liberated territories.” Reuters was not able to independently verify the report.