Police would like to speak to the man pictured in connection with a robbery that took place in Hitchin earlier this month.
The incident took place at the Esso Garage in Old Park Road at 9pm on Saturday, January 2. It is believed a man entered the store, approached the counter, showed the cashier a knife and demanded money. The cashier then passed over some money.
The offender then ran out of the store in the direction of the library.
Detective Constable Matt Creese is investigating and said: "Our enquiries into this incident are progressing. I would like to speak with the man pictured in the CCTV images in relation to this incident. It may be that he was a witness to the crime or can offer assistance in the investigation."
If anyone recognises him, or if you have any information about the incident, please call Hertfordshire Constabulary on 0845 3300 222 as soon as possible.
Alternatively call Crimestoppers, an independent charity, anonymously on 0800 555111.