Former police officer Beau Lamarre-Condon has been arrested on charges of the double murder of TV presenter Jesse Baird and his partner Luke Davies.

The victims' bodies were found in surfboard bags near a road in the NSW Southern Tablelands and taken to Lidcombe mortuary for post-mortem exams.

The arrest followed a significant change in Lamarre-Condon's behavior during an interrogation, which led to the discovery of the bodies at a second location.

Investigations suggest the use of a police-issued firearm in the murders, prompting a review of police weapon protocols.

The NSW police force is facing scrutiny and undergoing procedural improvements while dealing with the emotional impact of the case on its members.

The case has influenced discussions surrounding police participation in the Mardi Gras parade, with suggestions of officers marching out of uniform.