Rapper Tekashi 6ix9ine, real name Daniel Hernandez, is a new York courtroom.
The rapper was deemed to be a false act on Monday after a prosecutor said.
US magistrate Judge Henry B. Pitman concluded an hour-long hearing by "troubling" corroborating evidence was offered by a prosecutor to show that 6ix9 directed or participated in multiple acts of violence over the last eight months.
Assistant US Attorney Michael Longyear said a backpack was found during a robbery in April was found during a raid at Brooklyn Residence 6ix9ine's, along with an automatic pistol.
"The defendant is quite violent," the prosecutor said of a man whose debut album, Day69: Graduation Day, was among the most downloaded records on iTunes.
Mr. Longyear said 6ix9ine was captured on surveillance video as he was in a car and filmed in Times Square when his co-defendants were carried out a violent robbery against a gang member rival.
The video was also part of a video boasting about the shooting recently co-defendant in Brooklyn's Barclays Center.
Mr. Longyear also said the rapper was at risk of failure because of his worldwide connections, hundreds of thousands of dollars in cash and knowledge that would bring a mandatory minimum sentence of 32 years in prison and as much as life.
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Judge Pitman ordered that 6x9ine be held until a Tuesday bail hearing, saying he was concerned about the danger to the community, especially because the rapper could direct others to carry out acts of violence.
6ix9ine was among five people charged information containing racketeering and firearms charges.
The indictment alleged that he was participated in the July shooting of a stand in Brooklyn and the gunpoint robbery of one of his gang rivals last spring.
His lawyer, Lance Lazzaro, said 6ix9thine posed no threat and denial directing or playing any other role in violence.
Mr. Lazzaro said he had fired some of his defenders from his management and security team last week and offered federal agents on Saturday after some of them had been threatening his life.
After the rapper refuge, he was arrested on Sunday. 6ix9ine has been one of the most ascendant and controversial names in hip hop in recent months.
He is also known for the multi-platinum hit Fefe with Nicki Minaj, which peaked at number three on the pop charts, and Stoopid, featuring the incarcerated rapper Bobby Shmurda.
But 6ix9ine also has a series of run-ins with law enforcement and has been publicly identified as a member of a violent New York gang, 9 Trey Bloods, which was mentioned throughout the indictment.
Prosecutors said the gang carried out acts of murder, robbery and narcotics trafficking in Manhattan, the Bronx and Brooklyn, since at least 2013.
The member said that each gang was required to participate in at least two acts of racketeering conspiracy.
Those acts could include murder, robbery, extortion and drug distribution, the court papers said.
The 22-year-old recently pleaded guilty to disorderly conduct in Brooklyn Criminal Court in connection with a May traffic stop.
In the 2015 case in New York, 6ix9 was sentenced to probation for his involvement in a sexually explicit video of a 13-year-old girl.
The video, posted on social media, showed girl sex act on another man while 6ix9ine "behind the child making a thrusting motion with his pelvis and smacking her on her buttocks," according to court documents.