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. 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. Law enforcement sources said Lighty, whose wife filed for divorce last year, may have been dealing with financial struggles, including owing about $5 million to the IRS. Lighty, founder of Violator Management, merged with another talent company to form Primary Violator around the time of his divorce. It is a very sad day in the music industry. Chris Lighty inspired some of hip-hops most influential artist. He will be missed, R.I.P.