A man who allegedly held-up a Christchurch petrol station with a pistol in the early hours of this morning is being hunted by police.
A "skinny" man with a red scarf over his face, wearing a black hooded sweatshirt and armed with the hand gun, entered the Caltex station on Main South Road in Hornby around 5.45am.
He demanded cigarettes and cash before running towards Goulding Avenue.
A police dog tracked him for a period before losing the track in the Kyle Park area.
It sparked a call-out by the armed offenders squad to a nearby address, but it proved to be a "dud", a police spokesman said.
A scene examination has been carried out by a team of detectives and forensic staff.
While the offender remains at large, "clear" footage of him has been obtained, says detective sergeant Hamish Wilson.