Kyiv —

A prominent Ukrainian monastery complex in the heart of Kyiv was set on fire following a massive Russian attack overnight into Monday that killed at least four people and wounded more than a dozen in the capital, according to local authorities.

Images showed flames billowing from the UNESCO-listed Kyiv Pechersk Lavra, which traces its roots back almost 1,000 years, and firefighters beneath the towers and domes of its Dormition Cathedral battling to control the blaze.

A CNN journalist reported hearing several explosions during the overnight attack, during which Russia launched 611 long-range strike UAVs and 70 missiles, according to Ukraine’s Air Force.

By daybreak, firefighters were still working to douse the flames at the complex. Ukraine’s emergency services said a fire had affected 800 square meters of the roof of the Dormition Cathedral, and released images that showed damage to the building.