Officer Michael Nuanes, Jr., 37, said that his girlfriend hurled a Barbie-sized Justin Bieber doll at him, injuring his foot. He also accused the girlfriend of kicking him, biting his finger and choking him, according to an Adams County sheriff detective's sworn statement supporting an arrest warrant.

"Michael Nuanes stated that (his girlfriend) had thrown a 'Barbie Doll' at him, which bruised his foot and (said) that it hurt," the affidavit said. "Nuanes pointed out a 'Justin Bieber' doll, which was the item used to injure him."

The 42-year-old girlfriend accused Nuanes of pulling her hair out and punching her in the ribs, the affidavit said. The girlfriend also said that Nuanes kicked in the locked door of a bathroom where she had taken refuge and then he hit her over the head and back with part of the broken door.

At one point, the girlfriend used her cellphone to videotape Nuanes trying to drag her off a bed and the officer used his cellphone to make an audio recording of their argument, the affidavit said.

Deputes arrested Nuanes without incident at the Denver Police Department on Jan. 27, according to court records.

He faces domestic violence-related charges, including misdemeanor assault causing injury, property damage and obstructing telephone service. He was released from jail on $1,500 bond.

Denver police spokesman Lt. Matt Murray said Nuanes has been assigned to desk duty because he is prohibited from carrying a gun under a protection order issued in the domestic violence case.

Girlfriend Messaged Friend, Who Notified Internal Affairs

The investigation began on the night of Jan. 14 after Nuanes' girlfriend, while locked in the bathroom, used an iPad to message a friend of the couple, fellow Denver police Officer Anita Gomez, the affidavit said. The girlfriend messaged Gomez that Nuanes had assaulted her, trapped her in the basement bathroom and also took her cellphone.

Gomez, who works with Nuanes at the District 5 substation, called her supervising sergeant, the affidavit said. The supervisor advised Gomez to call the Internal Affairs Bureau, which investigates police misconduct.

Soon, Denver police internal affairs Lt. William Mitchell was calling the Adams County Sheriff's Office to report that a Denver officer had been involved in a domestic violence incident at his home in the Hudson area. Mitchell asked deputies to do a welfare check at the home and to start a domestic violence investigation.

By the time deputies arrived at the home, the girlfriend had left.

Dueling Cellphones: Both Nuanes, Girlfriend Record Fight

Nuanes said he and his girlfriend had begun to argue early in the afternoon.

He said the girlfriend had thrown two dolls at him, including the Justin Bieber doll that hit him in the foot, leaving a bruise, the affidavit said. The other doll had hit a wall. Both dolls, which Nuanes said cost $15 each, were broken.

The argument briefly stopped, but Nuanes said tempers flared again in the evening after he'd watched the Broncos game on television.

Nuanes told deputies that he found his girlfriend in a bedroom and told her their relationship was over and that she had to leave his house, the affidavit said.

Both Nuanes and the girlfriend said she repeatedly told him he couldn't legally "evict" her from the house, because it was her home, too, the affidavit said.

Nuanes said he went to get his cellphone to record their dispute and the girlfriend had locked herself in the bedroom by the time he returned.

When she opened the door, the girlfriend was using her cellphone to videotape him, Nuanes told the deputies.

Nuanes said he grabbed her phone from her and ran down to the basement, where the couple grappled, the affidavit said. Nuanes said the girlfriend was scratching him and he shoved her on a couch. She pulled him down with her and bit his finger, according to the affidavit.

A deputy noted that Nuanes had a cut or scrape on his left index finger where he said he had been bitten. He also had a fresh, bloody scratch on his right hand and a mark on his neck, the affidavit said.

Girlfriend Had Injuries To Head, Elbow, Ribs

Later that night, deputies interviewed the girlfriend at a friend's home.

She said the argument began during dinner when Nuanes gave her an ultimatum to change her Facebook page status to say she was in a relationship with him, the affidavit said. Nuanes then ordered her out of his house.

The girlfriend said the argument escalated into violence and Nuanes grabbed her by the hair, threw her to the ground and punched her in the ribs, the affidavit said. She locked herself in the bathroom, but she said he kicked in the door and continued to attack her.

A deputy photographed her injuries, including swollen bruises on the top of her head and elbow and a purple bruise on the left side of her rib cage, the affidavit said.

The girlfriend said that she didn't want Nuanes to get in trouble or go to jail, but she said that he needs help, the affidavit said. She told the deputy that she was not afraid of her boyfriend.

A deputy viewed the cellphone video the girlfriend took that showed Nuanes grabbing her leg and trying to pull her off a bed until she kicked at him and broke free, according to a search warrant affidavit.

Nuanes complained on the video that the girlfriend didn't bring him dinner that night, adding that "it's time for her to get out of his life," the affidavit said. The girlfriend said that she had photographs of her injuries from past abuse and beatings.

On Jan. 27, the girlfriend told a sheriff's office victims advocate that Nuanes had been texting her, saying that she had to "take the fall" for the domestic violence incident, according to the search warrant affidavit.

"Michael Nuanes said that since (the girlfriend) was a housewife, she had nothing to lose. And, if he was arrested, he would lose his job," the affidavit said.

The girlfriend said that Nuanes also told her that if she went to jail as the aggressor in the domestic violence incident, he would watch her children and would pay her bond, the affidavit said.

Deputies arrested Nuanes later that day.

Nuanes Involved In Beating Settlement

This isn't the first time Nuanes has been accused of wrongdoing.

A Denver man, David Nettles, filed a federal lawsuit in 2005, accusing Nuanes and three other officers of savagely beating him outside his home in 2003 after Nuanes mistook him for a domestic violence suspect who lived across the street.

Nettles, who at the time weighed 350 pounds and had a heart pacemaker, told 7NEWS the officers beat him to the ground with nightsticks. They shattered his shoulder and broke an arm trying to force his arms into handcuffs too short for his girth.

The city later paid Nettles a $75,000 settlement.

Nettles, now 59, called Nuanes “the worst of all of them," referring to the officers who beat him. "He's just wicked. He's evil," Nettles said.

“I have injuries for life," the man said. "I still take morphine."

During a 2003 police internal affairs investigation, Nuanes admitted to using a personal camera to photograph a prostitute's genitals after an arrest, according to the Denver Post.