Westminster (CO) police believe a shooting that killed a boy and left three others wounded was a “road rage” incident.

“Authorities say the slain boy's mother and brother remain in critical condition. A man unrelated to the family also was shot but was less seriously injured,” said Fox News.

A 23-year-old suspect Jeremy Webster was taken into custody about three hours after the shooting Thursday and is being held on suspicion of first-degree murder and assault.