A four-alarm fire has destroyed a historic building now housing an upscale restaurant in central New Jersey's horse country.

The cause of the blaze early Monday at the Sergeantsville Inn in Delaware Township, Hunterdon County, is under investigation.

No serious injuries were reported in the fire of the two-story stone building.

According to the inn's website, the building's original structure dates back to the early 18th century, when it was a private residence in what was known as Skunktown.

Two wings were added in 1830 and the building also served as a grain and feed store, a grocery store, and an ice cream parlor before becoming a restaurant in the early 1900s.