SALEM, Ore. (AP) — A person has died in a shooting involving police late Thursday on Interstate 5 south of Salem, troopers say.

The Salem Police Department said during a traffic stop late Thursday an altercation ensued and shots were fired by the troopers. The involved Oregon State Police troopers weren’t injured, police said. William Floyd of Oregon City died at the scene, according to police.

No information about the circumstances of the shooting — including what the person is suspected of doing — has been released.

The involved troopers have been put on paid administrative leave, which is standard practice. It wasn’t immediately clear how many troopers were involved.