Council Bluffs Police say the operator of a motorcycle suffered serious injuries during a collision at around 5:07-p.m. Tuesday, at S. 6th Street and 16th Avenue. Authorities say an investigation determined a 2010 Jeep Grand Cherokee was driving south on South 6th Street and stopped at the stop sign. It proceeded into the intersection and collided with a 2014 Honda motorcycle, which was driving east on 16th Ave.

The motorcycle did not have a stop sign. The driver of the motorcycle was taken by ambulance to the Nebraska Medical Center. The driver of the Jeep was given a citation for Entering Unsafe Roadway. No names were released.

The incident is under investigation by the Council Bluffs Traffic Unit.