Fausto Marquez, a 30-year-old Hispanic man, was shot and killed in Denver on the night of June 27, 2020. The shooting happened in the 3600 block of Park Avenue West during a first birthday party where a dispute escalated into a physical fight; two other men were wounded and expected to survive. Marquez was taken to a local hospital and died of a gunshot wound.

The Denver Police Department identified a suspect and obtained a first-degree murder warrant for Gumaro Rivas-Ceballos. Rivas-Ceballos was arrested without incident on July 10, 2020, and the Denver District Attorney later charged him with one count of second-degree murder, two counts of first-degree assault, and one count of possession of a weapon by a previous offender. Details about subsequent court proceedings, including trial or sentencing, are not readily available.

Anyone who was at the gathering or who has information about the shooting is asked to come forward.