Police reveal major update in the case against Beau Lamarre-Condon - as a mystery USB comes under scrutiny

A former police officer accused of killing Channel 10 presenter Jesse Baird and boyfriend Luke Davies with his service firearm inside an inner-city Sydney home has had multiple charges dropped.

Beau Lamarre-Condon,29,appeared before Downing Centre Local Court on Tuesday via AVL from custody as he faced two charges of murder and DV-related murder and one charge of break and enter.

Police allege the former NSW Police constable killed the couple inside their home in Paddington in February before their bodies were later found in surfboard bags in the Southern Tablelands.

Returning before the court,Mr Lamarre-Condon's lawyer,John Walford,said police had certified the former officer's charges and would be withdrawing the murder charges and proceeding with two charges of DV-related murder and the break and enter charge.

Qantas flight attendant Luke Davies. Picture: Supplied

Police allege the murders occurred after a pattern of 'predatory' behaviour by Mr Lamarre-Condon,a senior constable who had been in a brief relationship with Mr Baird months before his death.

Following his arrest,Mr Lamarre-Condon provided information to police that led to the discovery of the couple's bodies following a widespread search. He has since been dismissed from the force.

Sydney