CCTV images have been released of a man that police would like to speak to, in connection with an armed robbery in Royston in April.
At around 9.30pm on April 8, a man armed with what is thought to be a handgun, entered Ladbrokes bookmakers on Midland Road, and made demands for money.
He then left the premises with a quantity of cash.
Nobody was injured in the incident.
A police spokesman said that despite extensive enquiries, no arrests have been made.
Officers believe the man in the CCTV image could hold useful information.
Anyone who recognises the man, or who has information about the incident, should 101 quoting 1157 of April 8.
