Colorado ? A Wyoming prison parolee has been arrested in the 1997 rape and beating death of a University of Colorado senior after he was linked to the case by a DNA match and other evidence, Boulder police said Sunday.

Diego Olmos-Alcalde, 38, was being held on $5 million bail on charges of first-degree murder, second-degree kidnapping and first-degree assault for the rape and killing of 23-year-old Susannah Chase of Stamford, Conn.

“The department is ecstatic over this,” police Chief Mark Beckner said.

Chase was walking home alone early Dec. 21, 1997, after an argument with her boyfriend when she was beaten with a baseball bat and left for dead in an alley a block from her home.

DNA taken from seminal fluid found on Chase’s body that was entered into a national DNA database, apparently recently, matched Olmos-Alcalde’s, Beckner said.