The Joliet Fire Department responded to a building fire on Cass Avenue Monday morning.

Crews were called to the scene at 224 E. Cass St. at 9:36 a.m. following a report of a “possible building fire,” according to a fire department news release.

Upon arrival, firefighters discovered the three-story building had “thick black smoke” coming from the roof, according to the release.

After accessing the roof, firefighters found roofing materials for an ongoing renovation actively burning on top of the building and extinguished them, according to the release.

Crews conducted a search of the building to ensure no fires had extended into the building and discovered no further burning or damage, according to the release.

Due to the ongoing renovations, the building was completely unoccupied at the time of the incident and no injuries were reported, according to the release.

Crews left the scene in less than an hour from the time they arrived. No cause of the fire has been reported.