A woman, 20, was knocked unconscious after she was punched in the face and robbed.
She was attacked by two men near an underpass in Southway, Colchester, close to Mersea Road, between 3.30am and 3.45am on Friday.
When she awoke her bank card and £60 cash had been stolen.
She suffered a fracture and swelling.
Both suspects were white, about 6ft tall and clean shaven. They wore black hooded tops and blue jeans.
Anyone with information should call police on 101.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here