Illinois State Police are seeking information in a hit and run accident on Illinois Route 150 west of Mahomet that seriously injured a bicyclist Sunday afternoon.

Police say that, at approximately 4:20 p.m, three bicyclists were traveling on the right side of the roadway westbound near Spring Lake Road in Champaign County. A truck tractor semi-trailer, also traveling westbound, struck one of the bicyclist, causing serious injuries. A second bicyclist was also struck but police say the injuries were not life-threatening.

The semi, described as possibly white and silver with a semi-trailer, did not stop after the accident occurred. It may have sustained damage on its passenger side.

Anyone with information or who was a witness to the crash is asked to contact the Illinois State Police at ISP.Zone05.Media@illinois.gov.