An elderly woman has been forced to leave her home after a firework that landed in guttering set fire to the roof as she slept last night.
The Hamilton woman was alerted to the fire, which took hold in the ceiling cavity, only when a group of teenagers banged on her door and windows in the Dinsdale suburb about 10pm.
Hamilton Police Acting Senior Sergeant Dale Smith said a large, used firework was recovered at the scene and it appeared it had been lit and launched into the air, landing in the guttering of the rental property.
It burnt up into the ceiling cavity, charring the trusses and melting a water pipe in the roof space which burst and filled the cavity with water, causing extensive damage, he said.
Mr Smith said that although no one saw the incident, residents in Paterson St reported a group of children and teenagers aged as young as 8 and up to 17 letting off fireworks in the neighbourhood shortly before the fire.