Hundreds of pounds was stolen by thieves in a raid on a bank in St Neots.
Wearing balaclavas, four men entered NatWest Bank, in High Street, at about 4.45pm yesterday (December 30).
Armed with pieces of wood, the men demanded staff open the safe.
The men left with around £300 cash and made off in a silver Saab towards Eynesbury.
Detective Sergeant Amanda Foreman, investigating, said: “Thankfully no one was injured during this incident but the staff working at the time have been left understandably shaken.
“We would like to appeal to anyone who may have seen these men before or after the incident, or the silver Saab they were driving, to come forward.”
Anyone with information is asked to call police on 101 or Crimestoppers, anonymously, on 0800 555111.