Police say a farm building in Alness was deliberately set on fire.
Firefighters were called to the “large” blaze in the Caplich Quarry area just after 7pm on Saturday.
Two fire engines remained on standby for almost 24 hours, leaving at 6.34pm on Sunday.
Images show the barn completely destroyed by the fire.
A Scottish Fire and Rescue Service spokeswoman said: “We were called at 7.12pm last night and we are still in attendance.
“We still have one standard appliance and one water carrier at the scene.”
At the height of the blaze, residents were urged to close their windows.
Police have confirmed the fire is being treated as deliberate and have opened an investigation.
Firefighters continue battling Alness fire
A Police Scotland spokesperson said: “Emergency services remain at Caplich Quarry, Alness, due to a barn fire reported around 7.30pm on Saturday.
“There are no reported injuries.
“The fire is being treated as wilful and inquiries remain ongoing.
“Local residents no longer need to keep windows and doors closed but should still avoid the area.”
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