Montgomery County police made the discovery in the home of Torrey Moore, 31, who they believe fatally shot 61-year-old Ayalew Wondimu at the Dash-In convenience store at a Shell station earlier that day.
Authorities at the time said Moore began arguing with the clerk as he paid for several items, then opened fire after they got into a physical altercation.
Investigators later spotted Moore in a surveillance camera video walking across the street to an apartment complex, and determined he lived there.
