LOUISVILLE, Ky. (WHAS11) – Fire crews battled a large four-alarm fire during extreme temperatures Saturday in Park Hill.

The warehouse, located in the 1400 block of South 10th Street, appears to belong to Royal Consumer Products—a company that manufactures paper products like poster board and designer stationery.

It’s unclear what sparked the blaze but officials told WHAS11 News the building was empty when the fire started and no injuries have been reported.

Crews were able to get the fire under control just before 6 p.m.