Mobile homes worth in the region of £500,000 were set on fire in Magheralin last night.
The fire service said that it looked as though one mobile home was deliberately set alight and positioned in such a way that the flames spread to the others.
Police were called shortly before midnight after around fifteen mobile homes were targeted in an arson attack at a property on the Drumnabreeze Road.
Inspector Gregory Beckett said: “Around fifteen mobile homes, with a total value in the region of half a million pounds, were destroyed by a fire which was reported to police shortly before midnight.
"Enquiries are at a very early stage and we are appealing for witnesses. Please call 101, quoting reference 1466 28/01/18.”