“Hello, 911?”

Dafonte Miller was breathing heavily when he called for help at 2:52 a.m. on Dec. 28, 2016. In the background, off-duty Toronto police officer Const. Michael Theriault can be heard telling Miller he’s under arrest and informing the dispatcher he’s on top of Miller.

“Back the f - - - up,” Michael Theriault is heard saying. Then later, “Dude, you’re under arrest.”

A recording of the call was entered into evidence this week in the Oshawa trial of Theriault and his brother, Christian Theriault.

The Theriaults were jointly charged with aggravated assault and separately charged with attempting to obstruct justice after Miller, then 19, was badly injured in a violent altercation near the Theriault family home on Erickson Dr. in Whitby.

The Crown alleges the brothers assaulted Miller and then lied about the interaction, including the claim that they were acting in self-defence. Both men have pleaded not guilty in the judge-alone trial before Superior Court Justice Joseph Di Luca.

Miller said “911” four times during the 66-second call as the dispatcher attempted to understand what was happening and where to send police. He can also twice be heard to say, “You got the wrong guy.”

In the same recording, Michael Theriault can be heard in the background, saying, “We’re holding this guy down.”

At the same time, Christian Theriault had made his own call to 911, telling the dispatcher that he and his brother caught someone trying to break into their cars.

“How many?” the 911 operator asked.

“I don’t know. We caught one of them. Mike, grab him, grab him,” Christian Theriault said.

“My brother’s an off duty cop,” he said moments later.

Miller is expected to testify that he was walking with his friends on the residential street when he was accosted, chased and beaten.

In their statements of defence, the Theriault brothers said they chased Miller after catching him and another person breaking into a car in their driveway.

Christian Theriault told Durham Regional Police that he and Michael were in their garage when they heard a truck door close and rattling outside their garage.

"When I exited out of the garage I saw (Miller) leaving the driver's seat of my dad's truck ... I began a foot pursuit," Michael said in his statement to Durham police.

In his 911 call, Christian Theriault told the dispatcher that his brother was restraining a man, and that an ambulance was required for “the guy we were chasing.”

Asked what his injury was, Christian said, “He was fighting. He’s fighting us … We’re all — all f - - - - - - bloody right now.”

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Moments later, he is heard saying, “You picked the wrong cars.”

In testimony Thursday, forensic pathologist Dr. Michael Pickup told the court that Miller received as many as seven distinct injuries.

The most severe of them — the rupture of his left eyeball, which left him blinded in that eye — as well as fractures to his nose and the bone around his eye were probably the result of blunt force, Pickup told the court.

The most likely explanation for the eye injury is at least one punch, he said.

“If you subject the eyeball to enough blunt force … that will increase the pressure inside the eyeball, and that will cause it to burst from the inside out, almost like a water balloon,” Pickup testified.

The court has heard that Durham Regional Police found an aluminum pole, approximately a metre long, at the scene of the confrontation on Erickson Dr. An eyewitness testified Tuesday that he saw one person wielding what appeared to be a four-foot-long “stick” while standing over another person on the ground, and using it to “push” the person onto the ground.

Asked by Crown lawyer Linda Shin whether it was possible that the pole could have been the weapon that caused Miller’s eye injury, Pickup said it was possible.

However, he noted that he might have expected further injuries if that were the case.

“Given the injury to the eye, I would have expected the injury to the nose to be higher” if Miller had been struck in the face by the pipe, Pickup said under questioning by Michael Theriault’s lawyer, Michael Lacy.

Miller was taken by ambulance to the emergency department of Oshawa’s Lakeridge Health hospital immediately following the encounter with the Theriault brothers in the early hours of Dec. 28, 2016. Later that morning, he was transferred to a Bowmanville hospital for the first of a number of surgeries to his eye.

The pathologist said Miller also had lacerations around both eyes and a fracture to his right forearm, but that the arm injury might have been suffered on another occasion. He said there was no diagnosis of the fracture when Miller left hospital after the confrontation, and that it wasn’t treated until weeks or months later.

Pickup was pressed by Lacy on the likelihood that Miller was struck by the pole on any other part of his body. Pointing to photos taken of Miller’s back shortly after the incident, Lacy asked whether two noticeable marks were consistent with what might be expected if he’d been hit with a cylindrical object.

Pickup said they were not, because the marking from a rod-like weapon would have caused what’s known as “tram track” bruising — two parallel lines on the outside of where the rod made contact. Pickup had previously said a large mark seen on Miller’s back in photos taken after the beating appeared to be “an old, healed superficial scar.”

The trial continues.