Police are investigating the aggravated robbery of a bar and restaurant on Riccarton Road overnight.
At around midnight a man walked into Trevinos Bar and Restaurant with a firearm, threatened an employee and stole cash.
He was wearing a black hooded jacket, a ski glove on his left hand and jeans.
"Thankfully no one was injured during the robbery," says Detective Andrew Beswick.
A scene guard was in place overnight and police are currently conducting a forensic scene examination and reviewing CCTV footage.
Anyone who was in the area at the time or saw something that might help the investigation is being urged to contact Christchurch Police on (03) 363 7400 or Crimestoppers anonymously on 0800 555 111.