The New York Police Department told Radio 1 Newsbeat the matter "is under internal review".
In the since-deleted post, the rapper reportedly made threats against Gonzalez, including "get the strap".
Gonzalez, who has been with the NYPD for almost 30 years and remains on active duty, the paper reported, tried to pass off the order as a joke. During a roll call inside the 72nd Precinct stationhouse, Gonzalez told his officers if they saw 50 Cent at the boxing match, known as a smoker, they should 'shoot him on sight, ' a source with knowledge of the case said ...
The "In Da Club" rapper responded on Instagram, writing in part that he "takes this threat very seriously" and that he's consulting with legal counsel.
A month before the roll call, the officer filed an aggravated harassment complaint, claiming 50 Cent threatened him on Instagram.
A high-ranking member of the New York Police Department is now the subject of an internal investigation for telling his fellow cops to shoot 50 Cent (born Curtis Jackson) as soon as they see him. According to various sources, 50 Cent aka Curtis Jackson is now concerned about his security as the NYPD inspector continues to possess a badge and a gun. The rapper nuked his post and no charges were laid.
And it all started after the rapper accused Gonzalez of "shaking down" the owner of one of 50's favorite clubs in NYC. He added a caption to the post which read, 'This is Emanuel Gonzalez commanding officer of the 72 precinct.
Fitty then appeared to threaten the Brooklyn boss in a since-deleted Instagram post in May, writing "Get the strap" - his token catchphrase, which he attaches to social media postings almost daily.
Gonzalez was sued by Imran (Star) Jairam, owner of the Love and Lust club in NY, after claims that he demanded 11 round-trip plane tickets to Puerto Rico following Hurricane Maria, free of charge.