Beau Lamarre-Condon has wiped his eyes describing the final moments when he fatally shot his ex-boyfriend and fought over a gun with the man’s new partner.

The 31-year-old has pleaded not guilty to murdering Jesse Baird and Luke Davies in a Sydney terrace in February 2024, arguing they were accidentally shot during separate struggles.

He told a NSW Supreme Court jury on Friday he went to Baird’s house on the morning of February 19 in an attempt to retrieve belongings he left there during their relationship.

“It was going to be a normal day,” he said.

He first went to a cafe and saw an Uber Eats motorcycle outside, which he said sparked the idea he could disguise himself as a delivery driver so Baird wouldn’t accuse him of harassment.

Lamarre-Condon’s voice broke describing taking the motorcycle helmet, high-visibility jacket, and gloves to enact his plan to surreptitiously enter the house.

“I wish I didn’t do this,” he told the jury.

After lingering outside the Paddington home for more than 20 minutes, he knocked on the door then pushed it open.

The former police officer saw packing boxes strewn through the halfway and started looking through them for his own belongings.

He then heard noises and ran upstairs to hide in one of the bedrooms, fearing he would be caught, he told the jury.

Lamarre-Condon said he still had the helmet on and his service-issued pistol hidden in its holster under his arm when he came downstairs after hearing noises which indicated the person had left the house.

It was at that moment he was spotted by Baird, who dropped the packing tape he had been holding but retained hold of a knife while yelling “we’re getting robbed”, he said.

“He couldn’t see that it was me because the visor was down,” Lamarre-Condon said.

“He lunged at me.”

He claims the pair struggled over the knife, which he asked Baird multiple times to drop, before the other man managed to pin him to a wall with the knife near his neck.

“This struggle felt like an eternity,” Lamarre-Condon said.

“I thought, ‘shit if he drives that into my throat, I’m going to be dead’.”

He told the court “police mode” kicked in and he unholstered his gun, pointed it at Baird’s shoulder, and fired in a bid to incapacitate him.

Baird grabbed onto the front of the gun and yanked it forward and the pair fell to the ground when Lamarre-Condon accidentally discharged the weapon a second time, he said.

“It was my fault,” he told the court while wiping his eyes.

“I’m responsible for his death, but it wasn’t intentional.”

Lamarre-Condon’s offer to plead guilty to the manslaughter of Baird was rejected by prosecutors.

Lamarre-Condon said he thought his ex-boyfriend was still alive so he picked up a phone from the kitchen to call triple-zero but then thought he could flag down a passing ambulance.

As he moved towards the front door, he said he was confronted by the man he now knows to be Davies holding the gun which he “must have picked up from the living room”.

“It was pointed towards me at my chest and he said ‘I’m going to f—ing shoot you’,” Lamarre-Condon testified.

He said he had his hands up and asked Davies not to shoot him, but the other man raised the gun to his head and swore at him again.

The police training kicked in again, he said, and he tried to direct the muzzle of the gun away from himself and back towards Davies as they struggled.

Davies must have pulled the trigger because the gun went off and a bullet became lodged in the doorway, Lamarre-Condon told the jury.

Prosecutors allege Lamarre-Condon was motivated by jealous obsession when he shot Baird execution style and then killed Davies through a door to eliminate a witness.

Lamarre-Condon put the two men’s bodies into surfboard bags and, with assistance from a friend, tried to submerge them in a dam southwest of Sydney before burying them near a Greek monastery.

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–AAP