Multiple fire crews have been tackling a blaze in woodland.
Suffolk Fire and Rescue Service was called to Barton Mills, near Mildenhall at 04:42 BST, where an area of land covering four hectares (9.9 acres) was ablaze.
Crews from Elmswell, Haverhill and Bury St Edmunds attended, while a tanker from RAF Lakenheath was brought in to help at 08:50.
A spokesperson for the fire service said there were no reports of casualties and crews would remain in the area for the rest of the day.
Alex Dunlop/BBCCrews were also supported by an operation support unit, the fire service saidAlex Dunlop/BBCAt 09:30 the fire service said progress was being made, but 75% of the area was still alight
