A man is in a serious condition after being stabbed twice by a stranger at a Christchurch service station.
Police are appealing for information about the armed offender, and today released an image of a man they want to speak to about the incident.
The stabbing happened at the BP service station on the corner of Edgeware Rd and Cranford Street in the early hours of this morning.
Police said a man and woman entered the service station at 6.30am.
Shortly after two men also entered the station and walked to a seating area.
"As the man and woman left the service station, one of the men in the seating area made an offensive gesture towards them," said a police spokesperson.