The rapper, whose real name is Daniel Hernandez, was reportedly in the passenger seat of a Chevy Tahoe stopped at a Brooklyn intersection at 4:30 a.m. when it was bumped by another car.
Hernandez, 22, told police two men got out and forced him into their car.
The men allegedly drove the “Oof” rapper to the home of the mother of his child and had him call someone to bring down some more of his personal property, The Associated Press reported.
The men took an "undisclosed amount" of jewelry and left, the paper reported.
In a photo published by TMZ, the rapper is seen lying in a hospital bed with a bruised face. The rapper was pistol-whipped during the robbery and the assailants made off with $750,000 in jewelry and between $15,000 and $20,000 in cash, sources told TMZ.
Before the robbery the star was hanging out at infamous Queens strip club CityScapes, the New York Post reported.
Tekashi has been known in recent months to boast about being the “King of New York” and being “untouchable," as he is currently involved in several rap beefs.
The robbery comes more than a month after the death of popular rapper XXXTentacion, 20, who was killed during a Florida robbery in June.
Four men were indicted in connection with the murder last week.