The Associated Press

COLUMBUS - Investigators said Wednesday they are trying to find the owners of four vehicles that stopped at a gas station a few blocks from one of 18 related shootings along a stretch of freeway.

A task force investigating the shootings, including one that killed a woman Nov. 25, released photos of the cars taken from the station's security cameras.

The vehicles' drivers are not suspects, Franklin County sheriff's Chief Deputy Steve Martin said.

They stopped at the station around the time of the shooting at a house Dec. 15, and investigators want to find out if they heard or saw anything suspicious, he said.

"Law enforcement has no evidence any of these vehicles are involved in the shootings," he said.

A resident heard three shots about 12:30 a.m. at the house about two miles north of Interstate 270. A bullet was found in a bathtub, and two bullet holes were found in the front of the house.

The vehicles stopped at the station between 11:58 p.m. and 12:06 a.m., the sheriff's department said.

The grainy and slightly blurry photos show a small light-colored four-door car, a medium four-door dark-colored sedan, a light-colored van and a panel-type truck.

Investigators have taken statements from gas station employees, Martin said.