A motorcyclist being pursued by law enforcement died Saturday night, when the 2004 Honda he was riding collided with the rear of a 2012 Chevy K1500 pickup in Polk County. The Iowa State Patrol reports 21-year old Aaron Bjork, of Des Moines, died at the scene of the crash between Altoona and Mitchellville. He was not wearing a helmet. The accident happened on westbound Interstate 80 near mile marker 146, at around 8:23-p.m., Saturday.

When the cycle struck the rear of the pickup, the pickup rear ended a 2011 Jeep Wrangler. Neither driver, both of whom were from Colfax, was injured. The State Patrol was assisted at the scene by Mitchellville EMS and Altoona Fire and Rescue.