Australian cop killed in shooting, man on run

Queensland man holed up
The scene in Queensland (7 News)

A gunman who allegedly shot and killed a police officer in Australia on Monday has shot at a police helicopter while cornered in a remote Queensland property.

Australian tactical crime squad officer Brett Forte was shot dead as two police cars followed wanted man Rick Maddison in his vehicle on a highway near Brisbane.

His car suddenly stopped and Maddison jumped out, firing an automatic weapon and spraying bullets at two pursuing police cars, police say. 

A siege has run through the night, with Maddison holed up in a shipping container on a farm.

He's reportedly been heard laughing, while firing at a police helicopter.