The three thieves targeted the Ackroyd Street Working Men’s Club in Morley at 1.30am on Monday, February 27.
Three male members of staff were clearing up at the time when they heard a banging on the front door.
When one of the men answered he was confronted by three men armed with a knife, a hammer and a screwdriver.
All three victims were assaulted but none were injured.
They were tied up and demands were made to open the safe.
The robbers then stole cash from the safe and also took the victims’ mobile phones.
Police have only released details of the incident, but detectives are continuing to carry out extensive enquiries into the incident and would like to hear from anyone with any information that could assist the investigation.
Anyone with information is asked to contact Detective Constable 3579 Simon Goldie at Elland Road via 101 quoting crime number 13170091425 or call the independent charity Crimestoppers anonymously on 0800 555 111.