SEATAC, Wash. -- A 22-year-old Fife woman was killed Friday morning in a crash on Interstate 5 near SeaTac.

Trooper Jeff Merrill said it was just before 7 a.m. when a man driving an Acura northbound in the far right lane rear-ended an SUV. The SUV then was knocked into the carpool lane, where it was struck by a small school bus.

The driver of the SUV, Megan R .Simon, was rushed to Harborview Medical Center where she later died. Neither of the other drivers was injured, and there were no students on the school bus.

In the aftermath of the crash, Merrill says another car struck the damaged cars, then sped off. Witnesses say the car was blue, but no better description was available. Troopers are asking anyone who saw that crash or the initial crash to call 425-649-4370.

The crash blocked most of the freeway for more than three hours, causing an eight-mile backup at one point.