A recording in which accused double-murderer Beau Lamarre-Condon claimed to be suffering work-related psychological trauma while travelling to surrender to detectives has been played to the Supreme Court.

Recording played to Supreme Court jury

ABC News NSW reported that the half-hour telephone call, placed to the Police Assistance Line as the former constable travelled across Sydney, was presented by prosecutors as key evidence in the ongoing proceedings.

Jurors listened to the audio exchange recorded shortly before the 29-year-old presented himself at Waverley Police Station in late February. The court heard the audio captured Lamarre-Condon speaking to an operator about his mental state, reporting symptoms of operational stress and psychological distress that he attributed to his frontline duties with the NSW Police Force.

Claims of psychological distress en route to arrest

According to the ABC News NSW report, the exchange detailed how Lamarre-Condon framed his mental condition during the critical hours leading up to his formal apprehension.

During the recorded call, the former officer raised cumulative trauma associated with police call-outs, providing this account to the operator at the same time homicide detectives were pursuing him across the state. The emergency call was logged as investigators mounted an extensive search following the disappearance of television presenter Jesse Baird and flight attendant Luke Davies.

The prosecution has alleged that the timing of the call, made while the accused was actively evading arrest, formed part of an attempt to craft a self-serving narrative before meeting with detectives.

Crown details final hours before surrender

The airing of the assistance call follows extensive evidence tendered by the Crown outlining the movements of the accused in the days between the deaths in Paddington and his arrival at the police station.

Prosecutors allege Lamarre-Condon used his police-issued Glock pistol to murder Mr Baird, 26, and Mr Davies, 29, inside a terrace property before concealing their bodies and transporting them to a rural location near Goulburn. The court has heard that in the days following the shooting, the former officer carried out extensive travel across regional New South Wales, made retail purchases, and discarded evidence before initiating contact with the assistance line.

Scrutiny over service firearm and mental capacity

The trial has placed significant scrutiny on the circumstances surrounding the officer's weapon access and the broader procedures governing off-duty firearms within the NSW Police Force.

Defence lawyers have directed attention towards Lamarre-Condon's mental state in the period surrounding the alleged offences, inviting the jury to consider his psychological vulnerability and operational stress.

Conversely, the Crown argues the killings were deliberate and calculated, maintaining that assertions of professional trauma do not diminish his criminal liability for the alleged murders.

The trial continues before the Supreme Court.