Antonio Alvarado Ruiz, 51, of Denver, was found dead in a desolate field in Aurora in early summer 2015. Police were called the evening of June 3, 2015, after a body was discovered in the 2600 block of North Monaghan Road. The Adams County Coroner identified Ruiz, and the Aurora Police Department Major Crime/Homicide Unit determined the cause of death to be a gunshot wound, classifying the case as a homicide.

Investigators publicly asked for anyone who might have seen or heard anything unusual in the remote area to come forward; a reward was offered for information leading to an arrest. What brought Ruiz to that secluded field and who he may have been with have not been established, and no suspects have been identified.

Does anyone have information about Ruiz, his movements in early June 2015, or observations from the North Monaghan Road area that could help investigators?