Police allege that Scott "Scooter" Braun, 29, failed to properly control the situation at Roosevelt Field Mall in Long Island, New York. A spokesperson for the Nassau County District Attorney's Office confirmed to MTV News that Braun was in custody.
As of press time, Braun — who also manages rapper Asher Roth — was awaiting arraignment before a judge. He faces up to one year in prison if found guilty on both second-degree misdemeanor charges.
According to NBC New York, police at the time of the incident ordered Braun to send a message to Bieber's fans via Twitter to notify his followers that the event was canceled.
Fans of the rising teen superstar were waiting for Bieber to arrive at the mall, where he was set to perform selections from his EP My World, which had just been released earlier in the week.
Braun, however, refused to send the message, police said. Instead, authorities contend Braun eschewed safety in favor of publicity. As things got out of hand, police said, Bieber's Twitter still read, "On my way to Roosevelt Field Mall in Long Island, NY to sign and meet fans! I'm pumped. See u there."
After a representative from the singer's label was arrested, a message from Bieber's Twitter was sent urging fans to go home. "The event at Roosevelt Mall is cancelled," he tweeted. "Please go home. The police have already arrested one person from my camp. I don't want anyone hurt."
The crowd waiting for Bieber turned rowdy when bystanders incorrectly insisted that the singer had arrived, which resulted in a stampede that sent one young female fan to the hospital.
An attorney representing Braun dismissed the characterization of events.
"Absent Scooter having a Superman's cape, he couldn't have [tweeted the cancelation] any faster," Ravi Batra told NBC. "As a result of his lawful compliance with police instruction, [we believe the DA] will dismiss the charges after reopening the investigation."
Bieber tweeted his support of Braun, who helped develop the singer and introduced him to his mentor, Usher.
"You've got my total support @scooterbraun," Bieber tweeted on Wednesday. "Wish you were here in Chicago with us #FreeScooter."