Seattle Police are building a vehicular homicide case against a driver who allegedly killed a 41-year-old Seattle man in a two-vehicle collision in Magnolia on Monday, Oct. 1.

Police and fire units responded to the intersection of Thorndyke Avenue West and Thorndyke Place West around 2:30 p.m. One man involved in the collision was trapped in his vehicle, and later declared dead at the scene.

The King County Medical Examiner’s Office identified him as Christoper Stagg, and his cause of death as multiple blunt force injuries.

One resident provided an account to the Magnolia Voice of attempting to help the Seattle man, but he died in the process. She said it took two other neighbors to remove one of the doors of his sedan to reach him, and that he was bleeding profusely.

The other driver was reportedly in a pickup truck, which ended up over a fire hydrant.

Seattle Police Detective Patrick Michaud said Wednesday the pickup driver was taken into custody, but he had to be transported to a hospital for his injuries. It was unclear if he was booked that day, he said.

Traffic collision investigators are still piecing together everything that occurred on Monday, but it is believed the man was under the influence of alcohol or/and drugs, Michaud said — a toxicology report is pending.

“We’ll work with prosecutors to make sure he gets charged,” Michaud said.