WARNING: This story contains graphic details and explicit language that might be disturbing to some readers

A female parking enforcement officer has accused three Toronto police officers of gang sexually assaulting her while she was too intoxicated to give her consent in a downtown hotel room in January of 2015, according to a police document obtained by CBC News.

The three officers, Josh Cabero, Sameer Kara and Leslie Nyznik, all from 51 Division, were arrested and charged with sexual assault and gang sexual assault on Feb. 19, 2015. They have been suspended with pay. A preliminary hearing is to be held next month. Their lawyers have said they will plead not guilty.

Details of the sexual assault, which is alleged to have taken place on the night of January 16, 2015, are contained in a document known as an information to obtain (ITO). In it, investigators lay out the evidence they have gathered as part of a request for a warrant authorizing the taking of bodily substances for forensic DNA analysis.

None of the allegations in the document has been proven in court.

Ontario Superior Court Justice Faye McWatt lifted the publication ban on the ITO this week.

According to the document, the three accused and the complainant attended a social function known as a "rookie night," which involved going to a number of bars.

At one point, the ITO alleges, Cabero, Nyznik,and the complainant joined Kara at a room at the Westin Harbour Castle Hotel.

The complainant alleges that the three officers sexually assaulted her in the room. She told police at times during the night she was sexually assaulted by two officers at the same time, and she says she didn't consent to any of the activity.

Police say video surveillance has captured the three accused and the complainant arriving and leaving the hotel.

"... she told investigators that she was too intoxicated at the time to know everything that happened and the room was dark," the document reads.

Police allege in the document that semen was identified on the complainant, the crotch area of her blue jeans, her black top, a necklace, a black bustier and a beige bra.

At the start of the evening, according to the ITO, the complainant went to CC Supper Club at about 9:30 p.m. Kara bought her a rum and coke. There were about eight to 10 officers at the club. She had a second rum and coke before heading to the Pravda Vodka Bar, where she had a vodka and cranberry juice and a tequila shot.

She told police she and Kara ordered more tequila shots and she drank hers. Kara said he didn't feel well, she said, and gave her his shot. She drank it as Kara went outside to throw up, and another officer hailed a cab for Kara.

She looked for Nyznik and Cabero, and the three of them went by taxi to the Brass Rail strip club, where she had a vodka and cranberry juice. In the taxi, she said she began to feel the effects of the alcohol, and they went a hotel. She said she did not remember the hotel's name.

'Josh, stop she is out,' one officer said

In the room, the complainant told police, Kara was sleeping, and Nyznik told her not to wake him up. The next thing she remembered, she said, was that she was on her back, performing oral sex on Nyznik. She said she could barely move and he had to hold her head up. She said she believed Cabero started rubbing her legs.

The complainant said she didn't tell them to stop because she couldn't form the words. She remembers someone taking off her jeans. She said at one point, the person in her mouth switched with the person between her legs. Then she remembers being penetrated. She didn't remember who was assaulting her but alleges she heard Kara say: "Josh, stop she is out."

The document alleges the penetration stopped after "a little more coaxing" from Kara. She remembers Kara calling her a name and someone penetrating her a second time. She also remembers someone ejaculating on her lower stomach and someone ejaculating on her upper chest. She said she didn't know who it was because the room was dark.

The complainant alleges that when she woke up, Kara was in the bed next to her and she believed Nyznik and Cabero were in the other bed. She saw her clothes on the floor but could not find her black thong underwear. She left the hotel room.

She told an investigating officer she "had never suffered such memory loss or experienced an inability to move or talk" and had never been that drunk before.

No comment from police on case

The complainant told police she went to North York General Hospital's emergency room. She waited five hours there, only to be told they could not deal with sexual assaults. She went to Scarborough Grace Hospital, waited a few more hours, got tested and medication for sexual transmitted diseases.

After going home, she told police she returned to Scarborough Grace Hospital, where a nurse did a sexual assault examination on her.

The nurse suggested there may have been anal penetration as well and she said she didn't remember. But told police she did remember one of the accused asking another if he should penetrate her anally.

She called in sick to work on January 22, when she was next scheduled to work, and was off sick for four days. When she went back to work after that, she had a panic attack.

In the change room, she threw up, she told her two female supervisors she had been sexually assaulted and that police officers were involved. Then she spoke with a staff sergeant. She described the three accused. The incident was reported to police on January 26, 2015.

Witness statements were obtained from 20 people, including a worker at the Pravda Vodka Bar, who said of the complainant when she was in the bar: "She was a disaster. She was really really drunk."

One officer interviewed by police told investigators: ".. women always wanna sleep with these two guys."

The lawyers for the three accused, the Toronto Police, and the Toronto Police Association declined to comment on the case on Wednesday.