Police are appealing for information following a report of three incidents of arson in the Banbridge and Dromore areas overnight.
The incidents were reported between 11pm on Monday night and shortly after 1am on Tuesday.
Sergeant Shannon said: “Three hay sheds located at Blackskull Road in Dromore, Steens Hill in Banbridge and Mountainview Road in Ballinskeagh were reported on fire by police between 11pm on Monday 16th September and 1:05am on Tuesday 17th September. Damage was caused to all three sheds during these incidents. Northern Ireland Fire & Rescue Service attended all three incidents and extinguished the fires.
Police have said they are treating the incidents as "deliberate ignition" and believe there is a potential link between all three incidents.
Anyone with any information is asked to come forward.