Russia overnight launched the biggest drone attack on Ukraine in the more than three-year war, a Ukrainian official said on Monday. The Russian bombardment on Sunday night included 355 drones, Yuriy Ihnat, head of the Ukrainian air force’s communications department, said.

Russia also fired nine cruise missiles during the attack, Ukrainian authorities said. Officials reported some civilians were injured. No deaths were immediately reported. US President Donald Trump said Russian leader Vladimir Putin has gone “crazy” by stepping up the bombing of Ukraine while the US tries to broker peace.