Justin Bieber turns himself in to police

Pop star Justin Bieber arrived at a Canadian police station Wednesday, reportedly in connection with the alleged assault of a limousine driver in December.

In images broadcast on television, the singer was seen entering the station in Toronto escorted by officers through a crowd of screaming fans.

CTV television said Bieber had been to the city on December 29 and was returning from a Toronto Maple Leafs hockey game when police were called to intervene in an altercation with the driver of a limousine he had ridden with his entourage.

Toronto police, however, said they could not confirm reports that Bieber would be formally charged at the police station with the assault.

"Duty Desk, 52 Division and Toronto Police Corp Comm cannot confirm any media reports about Justin Bieber, so please don't bother calling," Toronto Police tweeted.

If confirmed, the charges would mark the latest setback for the 19-year-old heartthrob after his Los Angeles home was searched because he allegedly threw eggs at his neighbor's house, and his arrest in Miami Beach on January 23 for drag racing and impaired driving.

Bieber said he was not guilty of the charges filed against him in Florida last week -- including drunk driving, resisting arrest and driving with an expired license.

In a filing by the pop star's attorneys to a Miami court, Bieber formally rejected the charges.

The White House, meanwhile, was asked to weigh in on Bieber's bad behavior after it received a petition with more than 100,000 signatures calling for the Canadian-born signer to be deported.