Christchurch Police are investigating the aggravated robbery of a petrol station on Blenheim Road.
At around 4.40am four men entered the store armed with hammers and a crowbar.
They threatened the store attendant and stole cigarettes and tobacco products.
The store attendant was not injured, but is shaken by the incident and is being supported by Police.
The offenders left the scene in a stolen silver Mazda Familia with the registration number FJF309.
The Mazda was stolen from a Riccarton address last night between the hours of 7pm and 10pm.
Anyone who was in the area at the time and saw anything suspicious is urged to contact Acting Sergeant Daniel Overend at Christchurch Central Police Station on (03) 363 7400 or Crimestoppers anonymously on 0800 555 111.