A request for oral sex led to an attack on a woman at rapper 50 Cent's mansion, according to court documents obtained Monday.

Police said the woman, who was not identified, had cuts and a gash on the back of her head after the early morning incident on Aug. 16.

Dwayne McKenzie — who works for 50 Cent and lives in a building at the rapper's sprawling estate at 50 Poplar Hill Drive — is scheduled to appear in Superior Court in Hartford today.

McKenzie, 28, and Michelle Krzykowski of New Britain, who turns 21 today, were charged with second-degree assault, conspiracy to commit second-degree assault and breach of peace, police said. McKenzie, who has arrest records in Farmington and Hartford, also was charged with first-degree unlawful restraint.

McKenzie was arrested Thursday after he was stopped by New Britain police on suspicion of violating seat belt laws, and Krzykowski turned herself in on a warrant the same day, said Farmington Lt. William Tyler. Krzykowski is due in court Sept. 1.

50 Cent was not involved in the assault, Tyler said.

According to the warrant for McKenzie's arrest, McKenzie asked a woman for oral sex. The woman had danced in a music video for another man who also was at the mansion that night.

One of the woman's friends took offense and argued with McKenzie, police said. The two women and their friends decided to leave and were in the driveway when Krzykowski ran at the group and grabbed one of the women, witnesses said.

McKenzie yelled that she was attacking the wrong person, and Krzykowski turned her attention to the victim, hitting her in the head with a hard object, the warrant states. The resulting gash required nine staples to close.

Witnesses told police that McKenzie pinned the victim to the ground while Krzykowski hit her. Krzykowski had been doing anything McKenzie told her to do that night, one witness told police.

The victim was able to get away after blasting her attackers with pepper spray, police said. She got into a friend's car and they left, calling 911 from a cellphone about 3:50 a.m.

Krzykowski told police she was very drunk and didn't remember talking to the other women at the house, although she recalled they had called her "cracker" — a derogatory name for white people — and that one of the women hit her.

McKenzie told police two women were involved in a fight, and that he broke it up and escorted them off the property.

In a different Farmington case from May, McKenzie faces charges including assault and strangulation. He also was found guilty in 2007 of illegal possession of a firearm, for which he received a suspended, five-year prison sentence, according to court documents.

McKenzie is part of 50 Cent's business known as G-Unit, said his lawyer, Gerald Klein.