Two people were injured in a car-to-car shooting on the 110 Freeway (search), police said.

The victims were fired upon about five times around 11:30 p.m. Tuesday as they traveled south on the freeway near downtown Los Angeles, but they were able to drive themselves to Kaiser Permanente West Los Angeles Medical Center, said Officer Alex Delgadillo, spokesman for the California Highway Patrol (search). Their conditions weren't immediately available early Wednesday.

The victims, who were in a black sedan, said the shots were fired by the front seat passenger in a white late model Chevrolet Impala, Delgadillo said. Television footage showed at least three bullet holes on the driver's side of the car.

The sedan's driver was hit in the left arm and the right front passenger was hit in the right arm and hand, Delgadillo said. A third person sitting in the back seat was uninjured, he said.

The victims couldn't describe the suspects, Delgadillo said.

At least four people have been killed in shootings along Southern California freeways since January, and half a dozen have been injured. In the most recent incident, a man driving on Interstate 405 (search) near Inglewood was shot in the chest on June 18. The man was treated and released from a local hospital.