A jury has been shown CCTV of Beau Lamarre-Condon buying a surfboard bag days before he allegedly shot Sydney couple Jesse Baird and Luke Davies.
Prosecutors allege Mr Lamarre-Condon planned to use it to dispose of Mr Baird's body, who was his ex at the time.
Mr Lamarre-Condon has pleaded not guilty to two counts of murder and one of aggravated break and enter, with an NSW Supreme Court trial in its first week.
The 31-year-old is accused of shooting Mr Baird and his new boyfriend, Luke Davies, with his police pistol at Mr Baird's share house in Paddington, in Sydney's east, in February 2024.
During the Crown's opening address, jurors were told Mr Lamarre-Condon was accused of planning Mr Baird's alleged murder in February 2024, including by stopping at a sports store days before to buy a surfboard bag to dispose of his body.
On Thursday, the jury was played CCTV of inside a store on February 17, 2024, showing Mr Lamarre-Condon and the friend looking at surfboard bags.
The jury was also shown footage of Mr Baird and Mr Davies at the Beresford in Surry Hills on the afternoon of February 18, 2024.
The officer in charge of the investigation, Detective Sasha Pinazza, told the court investigators got thousands of hours of footage from 200 or more places, covering the period of February 16 to February 23, 2024.