A MAN was knocked unconscious as he walked along a town centre street in the middle of the afternoon.

Police are calling for witnesses to the attack, which saw the man in his 40s struck in the face at 2pm in Magdalen Street in Colchester on April 29.

After falling to the ground unconscious following the blow, the man woke to find he had been robbed of his Sony Ericsson mobile phone and a blue and white Timberland hooded top.

Anyone with information is asked to contact the investigating officer DC Chris Leslie at Colchester CID on 101 or call Crimestoppers anonymously on 0800 555111.