A passing motorist spotted a fire at an old school building and called the Waukesha County Communications Center around 6:24 AM Saturday.

The building was located at S31 W 29553 Sunset Drive in the Town of Genesee.

The Waukesha County Sheriff’s Department and the Wales Genesee Fire Department initially responded to the call, but then more than ten additional Fire Departments were called in for assistance.

The structure was an old school building that had been re-purposed into a learning community.

No one was inside of the building at the time of the fire.

The fire caused substantial damage to the building.

The cause of the fire is under investigation.