Police investigating a racist assault in which an Iraqi teenager was almost killed are hoping CCTV camera footage will help them catch the attacker.
Police are to study CCTV footage to see if the attack was filmed
The 18-year-old victim was rushed to hospital with severe lacerations to his neck after the attack in Commercial Road, Portsmouth, on Saturday night.
He is currently in hospital in a "stable condition", police said.
A 23-year-old local man arrested following the assault was released on police bail on Monday.
He will reappear before police on 4 October.
Det Con Richard Rock said: "The man has been bailed for further inquiries. We will now be analyzing CCTV footage to establish exactly what happened.
"This is a serious incident and one which we are aiming to make some considerable progress on in the coming days."
Police said first aid given at the scene by a passer-by saved the victim's life.
He was with an Albanian friend when he was attacked at about 2230 BST.