A fire which badly damaged the roof of a home in Corby and spread to two other neighbouring properties is being treated as arson, police have said.
Officers are appealing for witnesses after a fire was started in the rear garden of the home, in Norse Walk off Copenhagen Road, sometime between 12.15 and 2.20pm on Wednesday (February 13).
The occupants of the three homes were evacuated and no-one was injured.
Fire crews from Corby, Kettering and Wellingborough were called to the scene at the block of three terraced homes after the alarm was raised.
Firefighters managed to stop the blaze spreading to a second block of three houses.
A spokesman for Northamptonshire Fire and Rescue Service said four firefighters wearing breathing apparatus used hose reels and jets to put out the fire.
Witnesses at the scene said they had seen firefighters rescue a cat from one of the homes.
Streets surrounding the scene were cordoned off by police officers during the incident.
Witnesses who saw anything suspicious are asked to phone Northamptonshire Police on 101. Alternatively, information can be given anonymously to Crimestoppers on 0800 555 111.