KOHLER, Wis. — An investigation will begin soon into what caused a four-alarm fire at the Kohler Co. in Sheboygan County.

Officials say the fire started in the foundry building about 11:30 p.m. Wednesday. Firefighters were on the scene overnight in Kohler.

The Kohler Co. is a major employer in Sheboygan County and makes kitchen and bath plumbing fixtures and small engines and generators.