Police are searching for a man wanted in connection with a shoorting at a ten year old girl's birthday in Bromley.
Detectives were called to the children's party on Ravenscar Road on Saturday after an argument turned violent.
A man became aggressive with a 21 year old and later shot him in his leg.
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The film had formed part of a commemoration to the Choucair family, three generations of whom died in the fire.
John Nolan, who was found with cigarettes and two lighters, suffered burns on 65% of his body after being alight for around six minutes.
Known as Pily she died in January, seven months after the disaster, having suffered a stroke.