A man remains in hospital after being struck by a firework a week ago.
It happened last Friday evening at a fast food outlet on Alliance Avenue in north Belfast.
A firework rocket was dropped through the doorway by an unknown man at around 9.15pm.
The victim was taken to hospital with burn injuries.
The PSNI have appealed for information.
Detective Sergeant Michael Hawthorne said: "The firework has been identified as one from the Heroes and Villains series, made by Bright Star.
"The manufacturer has not supplied this particular firework to any Northern Ireland outlets, so I would ask anyone who knows anything about this type of firework in the local community to make contact with us and assist us in this investigation."
He added: "I would also continue to appeal to anyone who knows anything else about this incident to contact detectives at Musgrave Police Station on the non-emergency number 101."