Police still want to identify a man who assaulted a newsagent in Bristol on Sunday.
The attack happened at the newsagents in Gloucester Road at about 7.40am.
A man entered the store while the victim was mopping the floor of the shop.
The suspect then, for no apparent reason, attacked the newsagent who fought him off, forcing the suspect out of the shop. He did not take anything.
The newsagent was not seriously injured, despite being attacked with a knife, which was recovered following the incident.
Avon and Somerset Police initially arrested a suspect, and after further investigation he was released without charge.