The Russian Defense Ministry didn’t make any immediate comment on the Ukrainian claim, but it has previously reported that Russian warplanes destroyed several Ukrainian speedboats in the area.

Associated Press journalists at the site of the attack in the Donetsk region saw covered bodies on the ground and emergency workers extinguishing fires at market stalls, with blackened and mangled cars nearby.

Ukraine has increasingly targeted Moscow’s military assets behind the front lines in eastern and southern Ukraine and at the same time has launched drones against Moscow, most recently early Tuesday.

The local military administration in Kharkiv’s Kupiansk district said residents must comply with the evacuation order or sign a document saying they would stay at their own risk.

One of the 9 killed was an emergency official, and most of those wounded were police officers, emergency workers and soldiers.