A couple who shot dead two Las Vegas police officers in cold blood apparently saw them as oppressors, a spokesman says, revealing chilling details of the execution-style attack.

The couple, identified as Jerad and Amanda Miller, placed a swastika symbol at the scene of the cop killings before going on to kill a civilian at a nearby Walmart and then killing themselves.

They apparently had views “along the lines” of white supremacists, although police do not believe they were themselves white supremacists, assistant sheriff Kevin McMahill said on Monday.

Jerad Miller pinned a note to one of the bodies stating: “This is the beginning of the revolution” after killing them at a pizza restaurant where the officers were having lunch.

The couple entered the restaurant Sunday, walked past the booth where the officers were eating, and then Jerad Miller “pulled a handgun out and shot officer (Igor) Soldo one time in the back of his head,” said McMahill.

“Officer Soldo immediately succumbed to his injuries. At that time, officer (Alyn) Beck immediately began to react, when he was confronted by lethal gunfire from Jerad Miller, and he was shot once in the throat area,” he told reporters.

The couple then both shot multiple rounds into the two officers, before pulling their bodies out of the restaurant booth.

They then placed an American revolutionary flag on one of the bodies, “and also threw a swastika on top of his body”.

Jerad Miller then “pinned a note to officer Soldo basically stating that this is the beginning of the revolution”.

Officers were still investigating the motive for the attack but McMahill said: “There’s no doubt that the suspects have some apparent ideology that’s along the lines of militant and white supremacists.”

But he added: “We believe at this point, with the swastika, we don’t necessarily believe that they are white supremacists or associated with the Nazi movement.

“We believe … that they equate government and law enforcement … and those who support it with Nazis …. They believe that law enforcement is the oppressor.”

The couple eventually holed up in the back of the Walmart store, where Amanda Miller shot her husband before taking her own life.