A Seattle man died in a multiple-car rollover that blocked five lanes of southbound I-5 traffic Wednesday, according to Washington State Patrol.

Just before 6 a.m. a black Toyota Land Cruiser and white Ford Crown Victoria taxi cab collided on the two Southcenter Parkway exit lanes, near the I-405 interchange.

The Land Cruiser rolled onto southbound I-5, where it was hit by a black Toyota Camry.

A passenger of the Camry was treated for minor injuries. No one else was injured.

The 43-year-old driver of the Land Cruiser was pronounced dead at the scene. He wasn’t wearing a seatbelt.

Five lanes of traffic were closed for 2 1/2 hours while troopers investigated.

Detectives are looking for witnesses who saw the crash or incidents leading up to it.

The State Patrol is asking witnesses to call detective Ruth Medeiros at 425-401-7719.