He was a rookie cop chasing down a thief who had just broken into his car.
Now, police are trying to determine whether any disciplinary or legal action will be taken against the officer who fired or whether the victim, Omar J. Edwards, might not have followed proper procedure.
The officer who fired and two others involved were placed on administrative duty during the investigation, and it is too early to say whether anyone was at fault, said police spokesman Paul Browne.
"The matter is under investigation. I'm not going to characterize the shooting in any way," he said Friday.
The episode once again raised questions about whether the NYPD is too trigger-happy, especially when the targets are black. The officers are white; Edwards was black.
Edwards left his shift early at the police housing bureau in Manhattan's Harlem neighborhood Thursday around 10:30 p.m. when he noticed a man rummaging through his car along a darkened street. The man, Miguel Santiago, had used a metal spark plug to smash the window, police said.
Edwards struggled with Santiago, who wriggled out of his sweat shirt and took off running. Edwards pursued him with his 9 mm Smith & Wesson handgun drawn, witnesses told police.
Meanwhile, Officer Andrew Dunton, a sergeant and another officer in an unmarked gray police car came upon the two men running. The officers were on routine patrol from the neighboring 25th Precinct anti-crime unit.
Santiago, who ran past the officers, said later that he heard Dunton yell, "Police! Stop! Drop the gun!"
That's when Edwards, in front of the police car, turned toward the officers with his service weapon in hand, police said. Dunton fired six times from behind the passenger's door; Edwards was hit in the left arm, hip and back. He died at the Harlem Hospital Center about an hour after the shooting.
Though the official cause of death was a gunshot to the chest, the bullet that caused the fatal injury entered the left side of Edward's back before hitting his heart and left lung, said medical examiner spokeswoman Ellen Borakove. It lodged in the front of his chest.
Edwards did not fire his weapon, and Browne said that so far, no witnesses say he identified himself as an officer.
The other two officers ran after Santiago and arrested him on charges of petit larceny and resisting arrest. He was briefly hospitalized Friday but was being held at the 25th Precinct, police said. He was apparently living at a shelter.
Dunton, 30, has been an officer for four years.
On Friday, lawmakers and residents debated whether race played in the shooting even as the NYPD is the most diverse it's ever been.
"I think they just saw a guy with a gun. How's that cop (who shot him) supposed to know" he was a police officer, said Carmen Romero, who was on her way to work Friday from a nearby housing project. On the other hand, she said, it could have been because the cop was black.
Phyllis Tate, talking with another customer in a shop near the scene of the shooting, wondered how to identify officers if they're not in uniform.