Milwaukee Police are investigating a serious injury accident that happened in the 6900 block of W. Hampton Avenue around 12:15 a.m. on November 21. A 2002 Chevy Trailblazer going westbound on W. Hampton Avenue at a high rate of speed lost control and hit a tree. The driver, a 15-year-old male and two 14-year-old male passengers suffered non life threatening injuries. A 14-year-old male passenger in the rear suffered serious injuries and is currently being treated at a local hospital. The vehicle belongs to the driver’s father. The investigation into the crash is ongoing.