A vehicle hit a pedestrian in the westbound lanes of I-90 under unclear circumstances

Preston, WA.- A pedestrian was hit and killed by a vehicle near Preston on Thursday, according to the Washington State Patrol.
The wreck took place on Interstate 90, near the State Route 18 interchange.
A vehicle hit a pedestrian in the westbound lanes of I-90 under unclear circumstances.
The victim was killed in the accident.
The driver of the involved vehicle was taken into custody for unspecified reasons
The cause of the collision is under investigation.