Thieves attempting to break into a shop were thwarted by a fog alarm.
Two offenders smashed the side windows at the Tesco Express shop on Atherton Road, Hindley Green, at around 2.15am this morning, Sunday.
But they set the fog alarm off and fled without taking anything.
Firefighters were called to the scene, along with police, as it was feared the store was on fire due to the fog setting off the alarm.
They caused around £500 of damage to the shop, which should remain open as usual.