BOULDER, Colo. (CBS4) – Boulder police are searching for a man who tried to sexually assault a woman walking on a bike path.

The incident happened around midnight Friday just off the Boulder Turnpike and Diagonal Highway.

The 33-year-old victim told police a man knocked her down and tried to sexually assault her.

Police only have a basic description of the attacker. He’s described as white, about 5-foot-8 with a fit build. He’s believed to be between 25 and 35 years old.

Additional Information From The Boulder Police Department

Anyone with information about these crimes or the suspects is asked to contact the Boulder Police Department at (303) 441-3333.  Those with information regarding the identity of a suspect and who wish to remain anonymous should contact Boulder County Crime Stoppers at (800) 222-TIPS (8477) or (800) 444-3776.  Tips can also be submitted via the Crime Stoppers Web site at  Those submitting tips that lead to the arrest and filing of charges on a suspect(s) may be eligible for a cash reward of up to $1,000 from Boulder County Crime Stoppers.