A Republican-led state Senate committee on Monday defeated a "red flag" bill designed to prevent those in crisis from harming themselves or others with guns.
The Senate State, Veterans, and Military Affairs Committee voted 3-2 along party lines Monday to defeat the bill.
It would have let police or family members to seek a court order that someone considered dangerous temporarily surrender all firearms. Subsequent court hearings would extend or end such an order.
Many Republican lawmakers at the Capitol argued the bill threatened to encroach on gun holders' rights under the Second Amendment.
Many police and prosecutors supported the bill. They cited the New Year's Eve killing of Douglas County Sheriff's Deputy Zackari Parrish by a man known to the suburban Denver sheriff's department to be exhibiting increasingly erratic behavior.