WILBRAHAM, Mass. (WWLP) – Crews are investigating a building collapsed at the Red Bridge Hydro Power Plant in Wilbraham Tuesday morning.

According to Wilbraham Fire Chief Michael Andrews, they received a call around 9:00 a.m. with reports of smoke coming from the roof of the building. When crews arrived, there was a significant building collapse.

There was a small fire that was caused by the collapse which lasted about 20 minutes, but the fire did not spread and it was put out quickly. No one was in the building during the time of the collapse.

Chief Andrews says that this has nothing to do with electricity, and no one lost power from this incident. The power plant, which is located over the Chicopee River, is operated by Patriot Hydro, an affiliate of LS Power.

LS Power says the 4.5-megawatt power generation plant was offline at the time of the collapse and the gates that control water along the river have been closed.

Massachusetts Department of Environmental Protection (MassDEP) crews were called in to collect debris and help collect oil drums that fell into the water below. Chief Andrews says a small amount of oil was released into the river and MassDEP has placed boons in the water to contain any substance. Residents may see an oil sheen on the water and are asked to avoid them.

The cause of the collapse is being investigated by plant personnel and engineers.

Members of the Ludlow Fire Department, Wilbraham DPW, Wilbraham Building Department, National Grid, and Eversource assisted with the incident.