Colorado woman killed by rock thrown through windshield; similar incidents being investigated

A 20-year-old Colorado woman was killed Wednesday night after a rock was thrown at her vehicle. Local law enforcement is investigating her death and a series of similar incidents from Wednesday night.

At about 10:45 p.m. local time, Alexa Bartell was driving in Jefferson County when suspects, believed to be in a vehicle or possibly on the side of a road, threw a large rock at Bartell's car, the Jefferson County Sheriff's Office said Thursday. The rock went through the windshield and struck and killed her, the sheriff's office said.

Bartell was on the phone with a friend when she was struck, according to the sheriff's office. The phone went silent, but Bartell's friend was able to find her by tracking the phone, police said. The friend found Bartell fatally wounded ine her car, which had driven off the road and into a field, the sheriff's office said.