A 67-year-old man was walking his dog on Tendring Road just before 10.30am on Thursday, June 27, 2013 when two men on bikes told him to get out of the way before pulling out a knife.

The man with the knife is described as white, aged in his late teens and approximately 5ft 7ins tall with brown hair that is slightly curly.

At the time, he was clean-shaven and was wearing a grey hoodie with red piping around the hood, grey tracksuit bottoms and scruffy trainers. He was riding a multi-coloured bike.

Investigating Officer, Pc Gemma Bristow, said: “At this stage, there appears to be absolutely no reason for this outrageous behaviour which has left this man very shocked and frightened. We need to identify this young man quickly so he can account of his actions. We believe he lives locally and so are appealing not only to his friends, but also his relatives to contact us with his name.”

Anyone with information in connection with this is urged to contact investigating officers at Harlow police station on 101. Information can also be passed anonymously to Crimestoppers on 0800 555 111.