Police say it was fortunate no-one was killed or seriously injured in a series of fires in the Christchurch suburb of Parklands overnight.
Emergency services were alerted to the fires at about 2.30am this morning.
Detective Senior Sergeant Michael Ford says three fires were found at three residential properties, with two of the fires causing damage to houses and the third to a vehicle parked up a driveway.
The police and Fire Service investigators are treating the fires as suspicious.
Mr Ford said one of the houses sustained considerable damage and the occupants managed to get out unharmed.