Although the investigation is ongoing, a spokeswoman for the Irvine Police Department said there has been public speculation that Dorner used a silencer when he killed the daughter of a retired LAPD officer and her fiancé, who were sitting in their car in an Irving condo complex. No one, she says, reported hearing any gunshots in the densely populated area where the couple was killed.

Ironically enough, Dorner had expressed outrage in his manifesto over how easy it was to procure the silencers. "Should I be able to purchase these class III weapons (SBR's, and suppressors) without a background check and just a $10 notary signature on a quicken will maker [sic] program? The answer is NO. I'm not even a resident of the state i purchased them in. Lock n Load," he wrote. Dorner also scoffed at gun enthusiasts who promoted such accessories. "Who in there [sic] right mind needs a fucking silencer!!!"

Ad for pistol silencers.
Ad for pistol silencers. Advanced Armament Corp.
Silencer ad
From an Advanced Armament Corp. ad. Advanced Armament Corp.

Silencing is not a crime ad
Detail from an ad touting expanded silencer access. Advanced Armament Corp.
Silencer ad
AWC Silencers