FEDERAL WAY, Wash. — A multi-vehicle crash on northbound I-5 in Federal Way caused delays during the Tuesday morning commute.

The crash near S 320th Street involved seven vehicles, according to Washington State Patrol Trooper Rick Johnson. The backup was 7 miles long at 5:45 a.m., according to the Washington State Department of Transportation.

The crash was originally blocking three left lanes when it was first reported around 5:10 a.m. Trooper Johnson said the crash was cleared by 6:20 a.m.

South King Fire said there are minor injuries.

The cause of the crash is currently unknown.