Russian drones, missiles and bombs hit Kyiv and Kharkiv, Ukraine’s biggest cities, in nighttime attacks, killing four people and wounding 15 in a continuing aerial onslaught, officials said. A Russian aerial attack struck Kharkiv, in Ukraine’s northeast, at around 3 am, hitting a house and killing four people, regional Gov. Oleh Syniehubov said. Nearly 20 houses were damaged.

Several hours earlier, Russia dropped a glide bomb on the landmark Derzhprom building in Kharkiv city centre, injuring seven people. Derzhprom, also known as the Palace of Industry, is included in UNESCO’s World Heritage List as an example of modernist architecture. Authorities in Kyiv said debris from intercepted Russian drones fell on two city districts, injuring six people.