Hazardous material crews are working to clean up hundreds of gallons of diesel fuel after a train derailment in Loveland, Colorado.

Train derails in Weld County, Colorado, after crashing into a truck on the tracks. Amtrak says no passengers were injured.

Fans attending Louis Tomlinson's concert at Red Rocks Amphitheatre near Denver were injured by hail Wednesday night. Seven people were hospitaliz…

Five people were killed and 18 injured in a shooting at a gay nightclub in Colorado Springs, police said. A suspect was in custody and being treated …

Wildlife officials freed an elk from a tire that had been around its neck for at least two years.

Criminal charges were handed down to two former Colorado police officers after they forcefully detained an elderly woman with dementia last year. Kar…

The suspect jailed on 10 counts of murder in this week’s mass shooting in Colorado has been moved to another detention center because of “safety conc…

Police on Tuesday identified the 21-year-old suspect accused of killing 10 people - including a policeman - in a hail of bullets at a Colorado superm…

Boulder Police Chief Maris Herold listed the names of those killed in Monday’s mass shooting at a Colorado supermarket, which left 10 people dead, in…