Six vehicles are on the scene of a crop fire on Lower Road in Middleton.
A spokesperson for Suffolk Fire and Rescue said between 15 and 20 acres of crop were on fire.
Vehicles from Essex Fire and Rescue were also on the scene.
Six crews are also on the scene of a large fire in Cockfield.
While around 12 crews remain on the scene of a 50 acre fire in Hinderclay.
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