CCTV images of an armed robbery at a Cambridge bookmakers have been released by police.
Two masked men burst into the Coral shop on High Street, Chesterton, at 9pm on Wednesday and threatened staff with a handgun and machete.
One ordered two customers to lie on the floor while the other man demanded a member of staff hand over cash from the till.
PC Dave Hall, investigating, said: "This was a terrifying incident for the members of staff and customers who were in fear for their life.
"We are keen to speak to anyone who has any information about the robbery and also need to trace the two customers who were in the shop as they could be key witnesses."
Anyone with any information should call PC Hall on 101 or Crimestoppers, anonymously, on 0800 555111.