Hip-hop mogul Chris Lighty died Thursday morning after he shot himself after an argument with his estranged wife at his Bronx apartment, sources told the Daily News.

Lighty, 44 — a longtime manager of 50 Cent, Diddy, Ja Rule and Mariah Carey — stepped outside his South Riverdale apartment about 11:30 a.m., after a spat with his wife, Veronica, police sources said.

Suddenly, a gun shot was heard and Lighty was found lying faceup with a 9-mm. pistol next to his body, sources said.