Police are investigating an armed robbery where a woman was threatened with a knife in Colchester.

The incident happened on Friday, February 2 at around 2.10pm, when a man went into the Martin McColls store in Fivefields Court, Colchester.

He approached the woman behind the counter and demanded £40.

She refused, but the man repeatedly demanded the cash, holding a knife in his hand throughout.

He was given the money and then left.

He is white, aged 35-40, around 5ft 8ins tall and of stocky build.

He wore a grey hat, dark fleece coat with a white hoodie underneath, dark trousers and white trainers.

Essex Police officers are keen to hear from anyone who witnessed the robbery, or who has any information which may help them.

Anyone with information should call 101 or Crimestoppers anonymously on 0800 555111.