A frantic 911 call became the disputed centerpiece of a trial pitting an officer’s allegations he was viciously assaulted by noisy partiers against defence allegations he is lying.

It reveals a man calling police to come and rescue him — from police.

“I’ve got a couple of cops here in my house. I don’t know who they are. They just knocked on my door,” the man tells a 911 operator.

“Hey what are you doing here?” the man shouts at someone. “Get out. You guys get out. I’ll hang up if you guys get out. …You need a warrant to go in the house.”

Const. David Monteiro testified Friday the 911 call was probably made by someone he saw running around the apartment with a cellphone and not one of the four men who allegedly attacked him.

But defence lawyer Leora Shemesh suggested the call was made by the man who answered the door of the eighth floor apartment, Tien-Dung Pham.

“They call 911 asking (for) you to be removed,” she suggested to Monteiro under cross-examination.

“That is not correct,” he said.

Monteiro alleges he and Const. Kurt Bassett were viciously attacked by four men when they went to the Capreol Court apartment to respond to a complaint about their loud music shortly after 5 a.m. on March 4, 2012.

Tien-Dung Pham, 34, his brother Tien-Tan Pham, 31, Ngoc Pham, 29, and Tu Bui, 32, pleaded not guilty in provincial court Wednesday to assaulting a peace officer.

Photos of three of the men taken after the incident show extensive injuries to their faces. Photos of Monteiro show some red marks on his face.

Shemesh, acting for Tien-Tan Pham, alleged Monteiro barged into the apartment without lawful reasons and has concocted a story to cover his tracks.

“That’s incorrect,” he said.

Holding a photo of her heavily bruised client, Shemesh asked the officer how he could explain two lines on the man’s face. “Did you take his face and force him into a door frame?” she asked.

“No,” Monteiro said.

“I am unaware of how his injuries were sustained,” he said, explaining it was an ever-changing fight.

Shemesh noted Monteiro, who testified he delivered closed-fist strikes to the men to stave off a potentially fatal attack, wrote in a police “use of force report” that he used force to effect an arrest, and did not say it was to defend himself.

Monteiro replied that the report does not allow officers to give multiple reasons for using force.

Shemesh suggested Monteiro is a martial arts expert and a professional boxer. He testified he has a second-degree black belt in Jujitsu, but denied he is a professional boxer. He said he boxes at charity events.

Shemesh asked him if he used his martial arts and boxing skills in the incident. “I use whatever training I have to defend myself from multiple attackers,” he said.

Monteiro says he was attacked by Tien-Dung Pham and Tien-Tan Pham almost as soon as they answered the door. They were aggressive, had their chests puffed out and appeared “hyper-alert,” he said.

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They each grabbed one of Monteiro’s arms, pulling him over threshold, he said.

What followed was an overwhelming attack inside the apartment in several waves, he said.