A gunman suspected of killing two police officers branded cops 'frigging Nazis', 'Gestapo' and 'terrorist thugs' as he relentlessly targeted a female officer because she pulled him over for speeding.

Two Australian police officers have been gunned down in an “execution” by a suspected sex offender who then took his wife and children hostage and fled into the bush, police said.

An armed 'sovereign citizen' has reportedly fled with his wife and kids after shooting dead two police officers and wounding another at a rural property in Porepunkah, 300km…