GRAND ISLAND, Neb. (AP) — Authorities say one person has been killed and two people have been treated at a hospital after a fire at a plumbing company building in Grand Island.

Grand Island Fire Chief Cory Schmidt says firetrucks were dispatched after several people reported hearing explosions around 10:45 p.m. Sunday. An estimated 40 firefighters battled the flames, and crews were still on the scene Monday morning to handle hot spots at the Winfrey Plumbing and Heating building and a nearby building where the fire had spread.

Fire Department shift commander Ed Carlin told station NTV that one body was recovered and that the two people injured were taken to a Grand Island hospital.

Schmidt says the state fire marshal’s office has been called to help determine what caused the explosions and fire.