A teenage boy has lost the sight in his left eye after he was deliberately hit by a firework in Salford.
At about 7.30pm on Monday 5 November 2012, the 14-year-old boy was with three friends on playing fields near Duchy Road.
When the group were at the children's play area, a rocket firework was fired at them. It hit the boy in the face.
Neighbours were called and the boy was rushed to hospital.
He has now been told that he will never fully regain sight in his left eye.
A man was seen running from the park after the firework hit the teenage boy.
Detective Constable Jon Marsh said: "This is an inexplicably savage attack and I have to say that while it is tragic that this boy has been blinded in one eye, it is also fortunate that nobody was killed.
"For many years, all of the authorities have worked hard to advise the public on how to enjoy a safe bonfire night, and then we hear of incidents like this.
"Our enquiries so far suggest that this was a deliberate act.
"Not only am I appealing for witnesses, but I am also asking for any information that could help this investigation."
Assistant County Fire Officer Peter O'Reilly said: "Our thoughts go out to the teenager and his family who are now living with the impact of this injury for the rest of their lives.
"Fireworks are dangerous, which is why we work so hard to encourage people to put safety first. It saddens us to hear of any injuries, particularly when they have such a devastating effect like this one.
"We hope the community is able to help us identify those responsible for this particular incident."
Anyone with information is asked to call police on 0161 856 5351 or call the independent charity Crimestoppers anonymously on 0800 555 111.