Police are on a manhunt after a young man robbed a Christchurch service station with a knife last night.
Police are investigating the robbery at the Ferry Road service station, in the suburb of Woolston, at 10pm.
A police spokesperson said a man entered the store carrying a knife, pointed it at the female service attendant and demanded money from the till before leaving with the money.
Detective Brad Greenstreet said the victim was not injured, but was receiving support.
He said cordons were put in place while a dog unit unsuccessfully tried to track the offender.
He said it was possible the offender fled on a bike or in a vehicle.
The man was described as 18 to 20 years old, dark skinned, about 160cm tall with a slim build.
He wore black pants and long black hoody with distinctive white detail on one sleeve, black and lime-green Nike trainers and a red cap with stickers on.
He had a blue bandana on with white detail and carried a brown or black backpack.