Actress Amanda Bynes says policeman sexually assaulted her during arrest over marijuana

Investigators say they are looking into allegations made by actress Amanda Bynes that New York Police Department officers sexually assaulted her when she was charged with heaving a marijuana bong out the window of her 36th-floor Manhattan apartment.

The 27-year-old former child star first alleged during her arraignment on Friday that police illegally entered her apartment after being called to her building. But in a Twitter message believed to be from the troubled actress posted Saturday, Bynes alleged that her arresting officer also sexually assaulted her.

"As it would with any such allegation, regardless of its credibility, [the Internal Affairs Bureau] is investigating it," said the police department's chief spokesman, Paul Browne.

The Twitter handle used to make the sexual assault allegations does not appear to be verified by the social network, but a friend of the actress, former Hollywood publicist Jonathan Jaxson, said the tweet was made from Bynes's account.

In court on Friday, the former Hairspray star made no mention of the sexual assault allegations, although she did complain of illegal entry to her apartment. She has been charged with reckless endangerment, attempted tampering with evidence and unlawful possession of marijuana.

A law enforcement official said the building manager was with officers at Bynes' apartment when they arrived on Thursday night. The official said officers were kept waiting approximately five minutes before she opened the door to them. The same official said the building manager told internal affairs investigators nothing untoward happened.