One person was injured in a four-car crash on northbound I-405 in Kirkland on Tuesday morning.

“It did turn out there was a minor injury – nothing serious,” said Washington State Patrol Trooper Julie Startup, noting all right lanes were blocked for approximately 25 minutes following the crash that happened around 6:30 a.m. The lane blockage caused a significant traffic back-up.

The WSP investigated the crash, which happened near Northeast 116th Street. Startup said the cause of the crash is unknown, though it appeared that speed was a major factor.