New York – The rapper known as Takashi 6ix9ine was in federal custody Monday awaiting a Manhattan court.
The Brooklyn-based rapper, whose legal name is Daniel Hernandez, is one of four people arrested for blackmail and weapons.
A lawyer who previously represented Hernandez did not immediately respond to an email seeking a Monday response.
The authorities also arrested three of Hernandez's former confidants, Kifano, Shouti of Jordan, Jensel of Beutler and Fahim of Karpi Walter. It is not clear whether they had defense attorneys.
6ix9ine was one of the most controversial and hip-hop names in recent months. His album Day69: The graduation day was among the top records on iTunes after its release in February.
He is also known for the hit "Fliff" with Henki Minag, who peaked at 3 on the pop charts, and "Stupid," in which the imprisoned rapper Bobby appeared.
But there is also a series of law enforcement runs, and he has publicly identified himself as a member of a violent gang in New York City, 9 Trey Blades.
The 22-year-old recently admitted misconduct in the Brooklyn criminal court about the station in May.
In 2015 in New York, 6ixine was sentenced to prison for his involvement in a sexually explicit video of a 13-year-old girl.
The video, which appeared on social media, showed the girl performing the sex act on another man while "positioned behind the child makes a movement squeezed with his pelvis and hits her on the buttocks," according to court documents.