A man wearing a balaclava threatened staff with a screwdriver and stole a three-figure sum of cash during a robbery of a post office in Colchester yesterday.

According to a spokesman for Essex Police the robbery happened in Ipswich Road at around 6.50pm on Wednesday, October 11.

During the robbery, the man threatened a female member of staff with what police believe was a screwdriver before riding off on a white mountain bike.

The man is described as at least 6ft tall, wearing a dark green coat, dark-coloured trousers, a dark-coloured balaclava which covered his face and a pair of dark-coloured gloves.

If you saw the man either before the incident or the moments after, or have any other information that could assist officers in their investigation, please contact Dc Trevor Clark at Colchester CID on 101.

Alternatively, contact Crimestoppers anonymously on 0800 555 111 or visit www.crimestoppers-uk.org