Staff at a Blackpool bookmaker were threatened by an armed raider who made off with £1,000 in cash.
Police were called to the BetFred store in Red Bank Road, Bispham at around 11.10am on Monday.
A Lancashire Police spokesman said: "We were called to the BetFred bookmakers this morning following reports of a robbery.
"A man has entered the shop with what appears to be an iron bar.
"He has threatened a staff member and demanded cash.
"The man then went behind the counter and made further threats to the staff member who has handed over cash."
Police said there were no customers in the betting shop at the time of the incident.
Around £1,000 in cash was handed to the man who then left the scene on foot.
Officers from Blackpool CID are investigating the incident and are hunting for the man responsible.
He is described as 6ft 2in tall,of athletic build with black hair and what police described as 'facial fuzz'.
He was wearing a dark coloured tracksuit.
Anyone with information should call police on 101 quoting log 343 of May 22.