A late-night parking lot fight in midtown Tucson ended in deadly gunfire on June 30, 2018. Just after 3:00 a.m. at 3650 East Speedway Boulevard, officers found 23-year-old Joseph Anthony Campos unresponsive with fatal gunshot wounds after reports of shots fired. Homicide detectives determined the shooting began during a large altercation among a group of males in the lot.

Investigators say one man, identified as 21-year-old Michael Anthony Colmenero, drew a handgun and fired multiple shots into the air while a second man, 43-year-old Eric Zamarra, also fired and fatally struck Campos. After public tips, felony warrants were issued and both men turned themselves in on July 7, 2018. Zamarra was charged with second-degree murder and disorderly conduct with a deadly weapon; Colmenero faced weapons and disorderly conduct charges.

Anyone who witnessed the disturbance or has information about what happened that night is asked to come forward.