Suffolk County firefighters battled a blaze for more than two hours at a large East Setauket farm complex.
Firefighters from 16 fire departments, including a fleet of ladder trucks and bulldozers, responded just after 10 a.m. to the property formerly known as Spycoast Farm on Brewster Lane in East Setauket.
The Suffolk County police arson section said in a statement Tuesday evening that three people were treated for non-life-threatening injuries and all the horses at the facility were evacuated safely.
The cause is believed to be noncriminal, the statement said.
The original owners in Kentucky said they were aware of the fire but declined to comment. They said they originally had a horse farm on the property, but relocated to Kentucky.
The property was sold for $19.7 million in 2015 to a New York City-based law firm's Jarel LLC, according to property records.
The farm, listed as closed, previously promoted "top quality performance horses," rehabilitation, fitness and an equine education center.