SIOUX CITY, Iowa (AP) — A man whose truck rammed two police vehicles and then used a chain to swing a metal object at officers was shot to death by police outside of an Iowa casino, state authorities said.

The Iowa Division of Criminal Investigation identified the man killed as 55-year-old Salvador Perez-Garcia of Sioux City, Iowa. Names of the officers were not released. Both are on leave pending an investigation by the sate agency.

The DCI said a Sioux City officer was parked inside a parking garage at the Hard Rock Casino around 4 a.m. Monday when a white truck drove at the patrol vehicle and rammed it head-on.

The truck was met by responding officers as it exited the garage and rammed a second patrol vehicle head-on, the DCI said in a news release. Perez-Garcia emerged from the truck “swinging a length of chain with an affixed metal object in an aggressive, threatening manner,” the agency said.

Officers tried to de-escalate the encounter and sought to take away the weapon, but couldn’t, the DCI said. When Perez-Garcia continued to approach the officers swinging the object, they shot him, the DCI said.

Perez-Garcia died at the scene.

One officer was treated for injuries sustained when his patrol vehicle was struck by the truck, Sioux City Police Chief Rex Mueller told the .

The Associated Press