Peter Damian Arguello, 64, was shot and killed during a robbery at his jewelry and antiques shop in the 7200 block of West 38th Avenue in Wheat Ridge, Colorado, on November 29, 2023. Surveillance footage shows Arguello admitting a man who initially posed as a customer; that man drew a gun and forced Arguello to the back of the store while a second man entered through the rear. The assailants tried to restrain Arguello with flex cuffs, and when he resisted he was shot. His body was found in the parking lot behind the business.

Witnesses heard shots and saw two men flee through the back door and leave in a red Chevrolet Silverado. The stolen truck was later found burned in Centennial with two partially burned hats matching those in the surveillance footage. Investigators identified two suspects, Charles Robinson Shay, 42, and Michael James McCormack, 51. Shay was arrested December 27, 2023, on an unrelated burglary of the closed shop and admitted that later break-in; DNA on the flex cuffs linked him to the murder. McCormack was identified as the alleged accomplice said to have gained Arguello’s trust to target the store.

Arguello was described by family and friends as a devoted family man and a long-standing member of the Wheat Ridge community whose business of 20 years closed after his death. If anyone knew Arguello, saw the red Silverado, or has information about the two men seen in the surveillance footage, please come forward.