DUBUQUE, Iowa (KCRG) - A Dubuque man was arrested in connection to a Colorado cold case on Monday.

At approximately 10:51 a.m. Monday, authorities arrested a 55-year-old man wanted on a warrant out of Adams County, Colorado.

55-year-old Robert McClain, of Dubuque, was charged with homicide. A warrant was issued for his arrest in the 2003 murder of 29-year-old Rosa Arguello.

The Dubuque Police Department said they received prior information suggesting McClain may be involved in a Colorado cold case.

The Thornton, Colorado Police Department investigated the case with the Dubuque Police Department.

“We are grateful for our partners at Dubuque PD and will continue to work closely with the 17th Judicial District Attorney’s Office to pursue justice for Rosa and her family,” said Thornton Po

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