The New York Police Department is looking into the sexual assault allegations made by Amanda Bynes last week. The troubled actress claims the police officer who arrested her had slapped her vagina after making bogus accusations against her.

The former Nickelodeon star was arrested Thursday night after the cop claimed that she threw a bong out her window. She said that she only opened the window "for fresh air."

Reports said that the arresting officer was quoted in the criminal complaint, saying that Amanda "grab said bong, run to the westbound-facing window, and throw it out the window where numerous pedestrians were walking on the 8 Avenue and West 47 Street sidewalks below."

According to RadarOnline.com, police officers responded to a report of a disorderly person, which said that Amanda was rolling a marijuana joint and smoking it in the lobby of The Biltmore on W. 47th St.

When they arrived at her apartment, they confronted her about the reports, but Amanda threw the drug paraphernalia out the window as they watched.

They arrested her and took her to the Roosevelt Hospital for a psychiatric evaluation.

But the 27-year-old former child star is denying that she threw a bong out a window, even accusing that the arresting officer was sexually abusive.

"Don't believe the reports me being arrested. It's all lies. I was sexually harassed by one of the cops the night before last which is who then arrested me. He lied and said I threw a bong out the window when I opened the window for fresh air. Hilarious. He slapped my vagina. Sexual harassment. Big deal," she wrote on her Twitter.

"I then called the cops on him. He handcuffed me, which I resisted, quite unlike any of the reports stated. Then I was sent to a mental hospital. Offensive. I kept asking for my lawyer but they wouldn't let me. The cops were creepy. The cop sexually harassed me, they found no pot on me or bong outside my window. That's why the judge let me go. Don't believe any reports."

Wearing a dishevelled blonde wig, she faced a judge the next day of the incident, and was released on a $1,000 bail following the hearing. She was charged with reckless endangerment, attempted tampering with evidence, and unlawful possession of marijuana.

And now, the Internal Affairs Bureau is "looking into" her allegations of sexual assault in the hands of the arresting officer.

"As it would with any such allegation, regardless of its credibility, IAB is investigating it," NYPD chief spokesman Paul Brown was quoted by the AP as saying.