A man has come face-to-face with his former friend Beau Lamarre-Condon nearly three years after the officer allegedly told him he had killed two men.
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Lamarre-Condon, 31, has pleaded not guilty to the February 2024 murders of ex-partner Jesse Baird and Mr Baird's new boyfriend Luke Davies.
The men's bodies were found at a rural property inside surfboard bags.
The former senior constable says he killed the men in self-defence inside Mr Baird's Sydney terrace and then "panicked considerably" disposing of their bodies.
But the friend, who cannot be identified for legal reasons, told a NSW Supreme Court jury on Friday that the then-police officer confessed on the day of the shooting.
After being told to come out from his workplace and meet Lamarre-Condon in a strange car, the friend asked the accused what was going on.
"I've done something ... I've killed people," Lamarre-Condon allegedly said.
When asked how he killed them, the sworn police officer allegedly made a firearm gesture with his hand and said: "Pew pew".
"I shot the first one through the head and the second one through the door," the friend recalled Lamarre-Condon saying.
The Crown alleges Mr Davies was shot through Mr Baird's bedroom door.
But Lamarre-Condon's barrister has suggested Mr Davies was killed in a violent struggle for the officer's police pistol.
The friend told the court he was asked by the senior constable if he would take the day off work to help clean up the scene, but he refused.
Later on the 19th, the friend said he received a message from Lamarre-Condon that made him angry.
"I should get an Oscar, hey," the 31-year-old messaged to his friend.
"That's not a f***ing joke, you're mentally f***ing with me," the friend replied.
"OK it is real, but I just don't want you to tell anyone," Lamarre-Condon allegedly responded.
The pair had dinner together at a Sushi Train restaurant the following night.
While driving the friend home, Lamarre-Condon allegedly said he had to throw out some bloody clothes and needed a skip bin.
The friend said he spotted a skip bin at Club Cronulla during the conversation and offered to get out and check how full it was.
In footage previously shown to the jury, a man can be seen getting out of the accused's grey Tesla and inspecting a large bin in the bowling club car park.
Lamarre-Condon made a further distasteful joke about his efforts to dispose of the bodies, the friend said.
"He made a gesture ... saying his legs were sore ... he didn't realise bodies would be heavy," the friend said.
The friend also gave evidence about a trip to a Decathlon sports store in Sydney's south two days before the killings, footage of which was earlier shown to the jury.
The friend said Lamarre-Condon told him he needed to collect surfboards from Mr Baird's house because he had left them there during their relationship.
But the man said he was confused by the conversation given his friend had never once spoken about an interest in surfing.
"We went to Bali and he didn't surf," the friend said.
"When I went surfing, he just went and did his own thing.
"I didn't know he surfed before we went inside (the store)."
In CCTV shown to the 15-member jury earlier in the trial, Lamarre-Condon can be seen holding up a bag next to his friend before selecting a bigger one.
"He then asked me: 'You're about the same size as my surfboard, can you stand up to it so I can measure it?'" the friend recalled.
"I might just get the bigger one," Lamarre-Condon said after the measurement, the friend testified.
Lamarre-Condon only bought one bag while shopping with his friend, but footage showed him buying a second bag from the same store hours after he allegedly murdered Mr Baird and Mr Davies.
The friend will continue giving evidence when the trial enters its sixth week on Monday.
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