Louisville bank gunman legally bought rifle a week ago

The chief said an officer who was shot in the head while responding to the mass shooting remained in a critical but stable condition on Tuesday morning.

A Louisville Metro Police officer walks outside the home of the gunman in the Camp Taylor neighbourhood in Louisville (Timothy D Easley/AP)

The gunman who opened fire at a Louisville bank legally bought the weapon from a local dealership a week ago, police have said.

Louisville Metro Police Department chief Jacquelyn Gwinn-Villaroel said at a press conference that bank worker Connor Sturgeon, 25, bought the gun on April 4 and targeted certain people in the attack.