Russia fired cruise missiles Thursday at a western Ukraine city far from the front line of the war, killing at least four people in an apartment building in what officials said was the heaviest attack on civilian areas of Lviv since the Kremlin’s forces invaded Ukraine last year.

The night-time attack destroyed the roof and the top two floors of a residential building, injuring 34 people. Emergency crews with search dogs went through the rubble. The youngest victim was 21 years old and the oldest was 95, according to Maksym Kozytskyi, head of Regional Military Administration.