A man suffered burns to his arm in one of three suspicious house fires in Christchurch overnight.
No one else was in the house on Kerrs Rd in Wainoni when firefighters were called about 3.30am.
The man suffered minor to moderate burns to his arm and was taken to Christchurch Hospital for treatment, an ambulance spokesman said.
Fire Service southern communications shift manager Andrew Norris said the blaze was one of three suspicious house fires in Christchurch overnight.
The other suspicious fires were in abandoned red zone houses, both of which had been damaged by fire before.