Detectives investigating an armed robbery in Essex have released a CCTV image of two men they want to speak to.

Two men entered the Esso petrol station in Stanford Road, ‪‎Grays‬‬ just before 7.55am on Thursday January 7.

One, who was armed with a large knife, approached the cashier, walked behind the counter and took a three figure sum of cash.

The staff member, a 23-year-old man, was not injured but left shaken.

Officers carried out a search of the area for the suspects, who are yet to be located.

Investigating officer PC Owen Clements, of Grays CID, said: “I am keen to hear from any witnesses who saw them running from the Esso garage towards Woodview and Rectory Road.”

Click here to view the CCTV image of the two men.

Witnesses or anyone with information are asked to call Pc C Clements on 101. Alternatively, they can contact ‪‎Crimestoppers‬ anonymously on 0800 555111 or