Six Whidbey Island residents were involved in a three-vehicle crash Thursday evening just south of Anacortes, sending two men to Harborview Medical Center in Seattle.

John B. Davis, 52, of Oak Harbor was driving a 2001 Chrysler PT Cruiser northbound on State Highway 20 near North Dewey Beach Drive at about 6:30 p.m., when he crossed the center lane, according to a Washington State Patrol press memo.

Davis struck an oncoming 2007 Kia Amanti driven by Lawrence S. MacArthur, 63, also of Oak Harbor, and came to rest in a ditch.

Davis and one of his three passengers, Brady R. Miller, 18, of Oak Harbor, were airlifted to Harborview Medical Center in Seattle.

As of Friday morning, both men were in critical condition in the intensive care unit, said Harborview spokesperson Susan Gregg.

The other two passengers in Davis’ vehicle, Brenda K. Cook, 31, of Coupeville, and Jody E. Hayes, 40, of Longview, were transported to a nearby hospital.

MacArthur and his two passengers, a 19-year-old Marysville resident and a 13-year-old Oak Harbor resident, were not injured.

Qiana L. Johnson, 33, also of Oak Harbor, was following MacArthur in a 2005 Hyundai Elantra and struck debris from the collision but was not injured and was able to drive away from the scene.

Washington State Patrol reports that everyone was wearing their seat belts and that the cause of the accident is still under investigation. Drugs or alcohol are believed to have been involved.