Christchurch police are appealing for any information about an armed robbery at a supermarket late on Saturday night.
Three men took money from a cash register at the Countdown in Northlands Mall, then assaulted a security guard with a metal pole, similar to a crowbar, as they left.
The robbery happened at about 11.20pm and left the security guard with a minor injury.
Police have released photos of the offenders, who disguised their appearance with dark coloured hoodies and gloves and wore balaclavas over their faces.
Anyone with any information that could help to identify the offenders should contact Christchurch police or Crimestoppers (0800 555 111).