Police are hunting a masked raider who held up a petrol station before escaping on a push bike.
The armed cyclist threatened staff at Campbell Oils on Kilmarnock's Hurlford Road on Sunday at about 1820 GMT.
Brandishing what appeared to be a gun, he stole a three-figure sum before making off on a BMX-style bike.
Two workers, a 34-year-old woman and 60-year-old man, were uninjured. The raider wore a black hockey mask and blue hooded top with grey sleeves.
He was also wearing dark trousers and white trainers.
Det Insp Scott McClelland from Strathclyde Police said: "I would like to speak to anyone who may have seen the suspect hanging around the petrol station prior to the robbery taking place or anyone who may have seen him cycling away on a bicycle.
"I'm also keen to speak to anyone who has recently had a BMX-type bike stolen and has not reported the theft to police."