Arrests made in deadly Colorado rock-throwing incidents.

Three 18-year-old men were arrested and charged with first-degree murder by extreme indifference after allegedly throwing large landscaping rocks at several cars, including one that killed a 20-year-old woman in Colorado. The suspects were taken into custody at their homes in Arvada and were traveling in a black 2016 Chevy Silverado that night. It is unclear who threw the rock that killed the victim. The investigation is ongoing.