Longmont police are looking for an allegedly violent 49-year-old man suspected in a Saturday assault on the St. Vrain Greenway near the intersection of South Martin Street and Ken Pratt Boulevard.

Chris Crespin is wanted on a felony second-degree assault allegation, but officers have been unable to locate him after checking locations affiliated with the man.

The victim in the assault sustained minor injuries, Deputy Chief Jeff Satur said in an email.

Crespin is a transient and thought to be staying in the southeast Longmont area of North 119th Street and Colo. 119, according to Satur.

Officer Jon Laundy obtained an arrest warrant for Crespin on the assault charge Monday afternoon.

Anyone with information on his whereabouts is encouraged to contact Longmont Police Department immediately at 303-651-8501.

Police advise residents to avoid approaching Crespin if he is seen, as he can be violent, Satur said.

The suspect is described as 5 feet 8 inches, 200 pounds with brown hair and brown eyes.

Colorado court records show Crespin has a lengthy criminal history in Boulder and Larimer counties dating to 1993, including convictions on counts of felony theft, drug possession, menacing and domestic violence.

Sam Lounsberry: 303-473-1322, slounsberry@prairiemountainmedia.com and twitter.com/samlounz.