Field Fire - Eynesbury - Huntingdonshire
Crews from St Neots and Gamlingay were called to a stubble fire in Howitt's Gardens where around 100 square metres of stubble was well alight.
Firefighters used a hose reel and beaters to extinguish the fire and returned to their stations by 9.17pm.
Cause of the fire was deliberate.
Anyone with information should contact police on 101 or call Crimestoppers anonymously on 0800 555 111.