A cat was killed inside of a Connecticut apartment by a bullet that was fired from outside the building by an unknown suspect on Sunday night, police said.

The shooting occurred outside of a building on West Main Street in Norwalk at about 11:15 p.m., according to police.

One of the bullets pierced the window of a residence and fatally struck the animal.

Witnesses told police they heard a vehicle peeling out shortly after the shots were fired, cops said.

No arrests have been made.