Officers arrived at the Norwood Palace Sports Bar to find a raging fight that included bar stools being smashed over patrons' heads, The New York Times reported.
Security guard Kevin White, 43, was shooting into the crowd in the bar before police shot him, officials said. Police also shot a 19-year-old man, who they said had stood in a doorway holding a pistol.
Witnesses said police identified themselves before shooting.
White was pronounced dead at a hospital, the newspaper said. The 19-year-old man, whose name was not reported, was said to be in stable condition at a hospital.
White had been arrested 28 times, including five times for gun-related offenses, police said, but the outcome of those arrests was not known, the Times reported.