DENVER — Police believe speed and alcohol were factors in a rollover crash that killed three men and seriously injured two others in Denver.

The accident occurred about 9:30 p.m. Sunday. The sedan apparently ran a red light and hit a tree in southwest Denver.

All of the victims are men in their 20s, but police have not released their identities.

Police say two people were pronounced dead at the scene, and the third person died after being taken to the hospital. The two other occupants remain hospitalized in critical condition.

Sgt. Mike Farr says it does not appear the men were wearing seatbelts.