Bainbridge Island police are asking for any witnesses to come forward who may have seen a 15-year-old boy crash on his bicycle July 18.

The boy was airlifted to Harborview Medical Center in Seattle with serious injuries. The accident happened around 2 p.m. on Baker Hill Road near Listening Avenue.

Investigators are looking for two vehicles that were seen in the area around the time of the crash. The occupants may have information related to the crash.

Anyone with information is asked to contact detective Eric Huska at 206-842-5211 or call 911 and ask to speak with an officer.