A Hyattsville man was shot and killed early Sunday morning during a fight with a security guard at the 7-Eleven store at 8202 Georgia Ave., according to a Montgomery County Police Department press release.

Twenty-seven-year-old Dean Christopher McDonald was buying an item in the store when he got into a dispute with the clerk, according to police.

“An armed, on-duty security guard, employed by a company that is contracted by the property manager to provide security services for the store, intervened,” the release said. “The dispute between McDonald and the security guard became physical and continued to the outside of the store. During the physical altercation outside of the store, the 44-year-old security guard discharged his weapon and struck McDonald.”

Police were called to the scene shortly before 4 a.m. Sunday and found McDonald unresponsive. Officers attempted life-saving efforts, which were not successful.

Detectives from the Major Crimes division are investigating the incident in coordination with the State’s Attorney’s office, and ask that anyone who has information about the incident to call 240.773.5070.

Screenshot from Google Street View, Sept. 2017.