Dmarlo Johnson image courtesy Durham Police Department

DURHAM (WTVD) -- The Durham Police Department said a man was shot and killed in an armed robbery at the Joy Food Mart at 2109 North Roxboro Street around 12:45 a.m. Saturday morning.Officers arriving at the scene said they heard shots fired and met an armed suspect leaving the store. He was ordered to put down his gun, but when police say he pointed it at them, they opened fire.Dmarlo Johnson, 26, of Durham was taken to the hospital with non-life-threatening injuries. He was later taken to the Durham County Jail where he's being held without bond.Police identified the dead man as Amer Mahmood, 48, of Durham. He was an employee of the Joy Food Mart.The officers involved have been placed on administrative leave, which is standard in police-involved shootings.The N.C. State Bureau of Investigation has been asked to review the shooting along with the Durham Police Department's Professional Standards Division and Criminal Investigations Division.A page has been set up to collect money for Mahmood's family and funeral expenses. Learn more at: http://www.gofundme.com/foramerskids.