THORNTON, Colo. — Authorities announced Monday that an arrest has been made in connection with a 2003 homicide case in Thornton that had turned cold.

Police in Dubuque, Iowa, took Robert McClain, 55, into custody Monday morning.

McClain is a suspect in the cold case murder of Rosa Arguello, 29.

Arguello’s body was found on the side of a road in the northern part of Thornton on Oct. 17, 2003.

Authorities said she had been stabbed multiple times.

Arrangements are underway to extradite McClain to Colorado.

Police said no additional information will be released at this time.

Coloradans making a difference | Denver7 featured videos Denver7 Everyday Hero gives her time to raise future service dogs

Colorado steps up to support kids through Youth Sports Giving Day

After Evergreen scho

See Full Page