Men who stole two safes during a robbery at a garage on Monday night (May 13) threatened two mechanics and a customer with a knife.
The incident happened at around 7.30pm at a garage in Frederick Street, Luton, as the two workers were finishing work on a vehicle while the customer waited.
Two men threatened them before forcing them into an office, then removed two safes containing cash, loaded them into a van and drove off.
One of the offenders was of Asian appearance, around 6ft tall and wearing a white or grey ski mask, and the other was white, around 5ft 9ins tall and wore a black balaclava.
Witnesses should call 101.