Dana Mullen was 43 when he was found fatally shot in a back alley near McKellips and Scottsdale roads in Tempe, Arizona, on October 14, 2015. The discovery prompted a homicide investigation that quickly focused on someone Mullen knew.

Investigators identified 23-year-old Anwar Dogka as an acquaintance of Mullen and arrested him the following week. Dogka was charged with first-degree murder; authorities did not release a motive for the shooting.

The killing occurred in a public area of the city and raised questions about what happened between the two men that night. Anyone with information about Dana Mullen, his movements that day, or his connection to Anwar Dogka is asked to come forward.