THORNTON, Colo. - A bicyclist who was hit and killed by a pickup truck Sunday night was at fault for the collision, police say. The man who drove away after the crash and was arrested during the investigation has been released for now.

The crash was originally called in as a hit-and-run but police said a 34-year-old Thornton man contacted them from his home to report he didn't know he had hit someone. 

According to Thornton Police Department spokesman Matt Barnes, the driver was David Dean Collins. The bicyclist hasn't been identified.

Collins reportedly told police that he thought he'd hit ice that flew off truck in front of him, but when he got home he thought the damage was too bad to be ice  so he immediately called police.  It was about a 10 minute delay, which would be about how long it takes to drive from the accident scene at 100th Avenue and Colorado Boulevard to his home on East 117th Avenue.

Collins was taken into custody after he called police, but Barnes said he was released pending a filing of charges in the investigation.

Barnes also revealed the cyclist was headed eastbound in the westbound lanes of 100th Avenue and ran the stoplight at the time of the collision.