Extra patrols have been carried out as the hunt continues to find those behind a string of arson attacks carried out in one night.
Seven fires, where fencing, plants and a wheelie bin were set alight, were reported to the emergency services in Wellingborough overnight on Friday, July 10, to Saturday, July 11.
Three of the fires were started at properties in Priory Road, Robin Lane and Heron Close, while there were two fires in Nightingale Lane and another two in Abbotts Way.
All seven fires are being treated as suspicious and police have been working with the fire service to find those responsible and stop any further arson attacks happening.
A spokesman for Northamptonshire Police said: “Since the fires of July 10 and 11, we have carried out extra patrols in the area affected.
“We have also worked closely with the Arson Task Force to give fire safety advice to people in the area and check smoke alarms.
“Letters are also currently being delivered to homes in the area offering safety advice and asking any witnesses to the fires to come forward.”
The fire service’s dog has also been drafted in to work in Wellingborough this week and try to find the cause of the fires.
Witnesses, or anyone with information, are asked to call Northamptonshire Police on 101.