UPDATED: FIRE officers from both sides of the Border have now extinguished a massive fire at a farm at Porthall, Lifford.
It took 10 fire appliances and dozens of officers in breathing apparatus to tackle the fire.
Fire engines from Strabane, Derry, Newtonstewart, Castlederg, Stranorlar and Letterkennny helped tackle the blaze.
Forensic officers are still at the scene of the fire, investigating how it started.