Justin Bieber is once again facing legal troubles after he was arrested for the second time in a week. The 19-year-old pop star turned himself in to Toronto police on Jan. 29 for allegedly assaulting a limousine driver, CBS reports.

Bieber was charged with assault for allegedly hitting a Toronto limo driver in the back of the head several times last month. Just hours before Bieber's second arrest, his attorney entered a not- guilty plea for a separate incident in Miami Beach, Fla.

On Jan. 23, the "Boyfriend" singer was arrested for driving under the influence, drag racing and resisting arrest. He was also accused of driving with an expired license and swearing at police officers.

Bieber is expected to appear in court on Feb 14 for the Miami Beach incident and March 10 for the incident in Toronto. According to CBS, police claim Bieber was one of six people the limo driver picked up after a night of partying on Dec. 30.

On the way to the hotel, police claim there was an altercation. During the alleged fight, one of the passengers struck the driver several times in his head.

"The driver stopped the limousine, exited the vehicle and called the police," a statement read, CBS reports. "The man who struck him left the scene before police arrived."

Bieber's attorney, Howard Weitzman, said his client is innocent and refused to comment any further on the allegations. He did say that he expects the case to be treated like a summary offense, which is similar to a misdemeanor in the United States.

The pop star is also under investigation for an egging incident in California after his neighbor accused him of pelting his house with eggs. According to reports, the damage to the house totaled about $20,000.

Following the singer's latest antics a petition was started on the "We the People" site demanding the Obama administration deport the singer and revoke his green card. Bieber is a resident of Canada.

Because the petition has reached the required 100,000 signatures, the White House must address and respond to the petition.