VINCENNES, Ind (WTWO/WAWV) — Update: Vincennes Firefighters battled a large fire on Main Street Friday.

The fire was in a building located in the 1000 block of Main Street in Vincennes

Vincennes Fire Chief Brett Bobe says that a truck leaving their headquarters spotted smoke coming from the second story of the building. Bobe says crews then entered to attempt offensive fire fighting maneuvers, however, the condition deteriorated quickly and by the time a line was run inside they decided to pull everyone from the building and take a defensive stance in battling the flames.

Assistance was called in from other area fire departments including Bicknell.

Bobe says the building housed a “group” that worked out of the unit and said he believed some of their workers may have been inside when the fire began, however, they were able to escape safely.

The cause of the fire remains unknown at this time, the State Fire Marshall’s Office has been called in to investigate.

Parts of the building collapsed in the fire. Bobe says the immediate area surrounding the building will remain closed for the time being due to worry that the remaining section of the building could collapse.

One person overheated in the incident, but otherwise, no injuries were reported.

As of 3:25 p.m., Duke Energy’s Outage map is reporting 380 customers without power in this area of Vincennes. However a spokesperson from Duke Energy stated that its not been confirmed if the outage is due to the fire or due to the previous nights stormy weather.