A trio of would-be robbers trying to nick a swathe of smartphones saw their plans go up in smoke after triggering a fog cannon.
After busting in a window at a Spark store in Silverdale arouund 3am on Thursday morning, the group made a speedy - and empty-handed exit.
CCTV footage provided by police shows the suspects entering the store, bursting in through a smashed window and then running out of frame.
Seconds later the trio appear again, running away from plumes of smoke filling the shop.
Orewa sergeant Nick Herd said Spark Silverdale had a fog cannon installed after previous burglars stole stock from the shop.