Firefighters remain at the scene of a blaze that broke out at the site of a speedway and stock car racing stadium.
A total of 29 crews from across Suffolk, Norfolk and Cambridgeshire were sent to the fire at Mildenhall Stadium in West Row, which started at about 5.30pm on Tuesday.
People living nearby have been asked to keep their windows and doors shut while firefighters continue to work in the area.
A spokesman for Suffolk Fire and Rescue Service said: "We ask that people stay away from the area and close windows and doors if in the vicinity.
"Crews have worked hard to stop the fire spreading in arduous conditions and expect to remain on site for some hours to come."
Photographs posted on social media by the fire service showed the scale of the fire.
Flames could be seen coming from the roof of the barn with smoke billowing into the sky.
The cause of the fire is not yet known.
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