Investigation underway after 20-year-old woman killed by rock thrown at moving car in Colorado

A 20-year-old woman from Arvada, Colorado, was killed after a rock was thrown at her vehicle on Wednesday night. The Jefferson County Sheriff's Office is investigating her death and a series of similar incidents from that night. There were multiple other incidents where rocks were thrown at vehicles, but no other incidents were fatal. The suspects may have been driving a "light-colored pickup truck or SUV," and law enforcement believes there could be further victims.