Firefighters battled three large hay fires in Melton last night.
Crews were called to the A6006, in Asfordby, at 10.45pm, following reports of a 200-tonne hay bale fire.
They spent about three hours tackling the blaze.
As they fought the flames, another call was received, at 11.45pm, reporting a second two-tonne blaze involving hay bales in Saxelby Lane, Saxelby - about two-miles away from the first incident.
Then at 12.30am, crews were called to Showby Lane, in Grimston, to deal with four large bales of hay which had also caught fire.
A spokeswoman for the fire service said all three incidents are believed to have been started deliberately and the police had been informed.
Fire investigators will re-visit the scenes of all three fires this morning to inspect the damage.