Richard B. Slightam, 52, and Carmen L. Lang, 50, killed in crashes involving multiple vehicles on Interstate 90 near Snoqualmie Pass, Washington

SNOQUALMIE PASS, Wash. (AP) — The Washington State Patrol says two people have been killed in separate crashes involving up to 10 vehicles on Interstate 90 near Snoqualmie Pass. Trooper Chris Webb says two semi-trucks may have been involved in the accidents Friday morning. The westbound lanes were expected to be closed for several hours.

SEATTLE – The driver of a semi-truck has been arrested on investigation of vehicular homicide after a multi-vehicle crash that killed two people near Snoqualmie Summit Friday, the Washington State Patrol said. It happened just before 7 a.m. near Milepost 54. Westbound Interstate 90 over Snoqualmie Pass is expected to remain closed for several hours. No other details about why the driver was arrested were immediately released. The driver who was arrested was towing a car hauler.

A driver involved in the crash that killed two people on westbound I-90 Friday morning was arrested for vehicular homicide. Washington State Trooper Chris Webb reports the driver was operating a semi-truck hauling cars when the crash occurred west of the Snoqualmie Pass summit. Westbound I-90 will be closed "all day," according to the Washington State Department of Transportation. Webb says there were a total of two semi-trucks involved in the crash. A total of 10 vehicles were involved in the crash.

Troopers say they believe the driver of the semi - an empty car carrier - was under the influence of drugs Friday morning when he lost control in the westbound lanes near Snoqualmie Pass, causing the chain-reaction crash. SNOQUALMIE PASS, Wash. (AP) - The Washington State Patrol says two people have been killed in separate crashes involving up to 10 vehicles on Interstate 90 near Snoqualmie Pass. The westbound lanes were expected to be closed for several hours. The Washington State Patrol says the driver of a semi-truck has been arrested for investigation of vehicular homicide following an eight-vehicle crash that killed two people on Interstate 90. It closed the westbound lanes for much of the day.