The two people killed Friday in an eight-vehicle collision with a semitruck on Interstate 90 near Snoqualmie Pass were Richard Slightam and Carmen Lang of Kittitas County.

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The Washington State Patrol has released the names of two people killed Friday in an eight-vehicle collision on Interstate 90 near Snoqualmie Pass, when the semitruck driver lost control of his rig and veered across the road.

Richard Slightam, 49, and Carmen Lang, 50, both of Ronald, Kittitas County, were driving west in a Volvo sedan when the truck swept across the road, blocking all lanes.

Their car hit the semi; Slightam and Lang died at the scene. Five people were taken to a hospital with injuries that were not considered life-threatening, the State Patrol said.

The truck driver was arrested on suspicion of vehicular homicide after the chain-reaction crash. He is suspected of being under the influence of drugs, according to the State Patrol.

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The State Patrol closed I-90 near Easton to westbound traffic for much of Friday as investigators mapped the scene. The section reopened shortly after 3 p.m.