The Colorado State Patrol says a woman was killed when she crashed her car into a tree off of I-25 north of Monument.
The crash happened at 6 a.m. on Thursday, August 22, 2013.
Troopers say the unidentified woman was driving a black 2013 Hyundai Sedan northbound on I-25.
The car went off the road near the Greenland exit and slammed into a tree.
Troopers say the woman was not wearing a seat belt at the time of the crash.
Investigators have not determined whether alcohol or drugs were factors in the crash.