SALEM, Ore. (AP) — A person was killed and a police officer was hurt after shots were fired Thursday morning in Salem, according to police.

A patrol officer was working on a traffic investigation when a vehicle crashed just before 10 a.m., Salem police said. The driver of the vehicle ran from the scene, KOIN-TV reported. The officer followed on foot and confronted the driver in a residential backyard.

Police said shots were fired and the officer was shot in the ankle while the driver was shot and killed. It’s unclear at this time who fired weapons.

The officer has been placed on standard administrative leave pending an investigation led by the Oregon State Police. The identities of the person killed and the officer have not been released.