BELLINGHAM, Mass. (WPRI) — Investigators did not find any hazards inside the Bellingham home that was destroyed by flames Sunday night, according to the Massachusetts Department of Fire Services.

Bellingham Fire Chief Steven Gentile said the bomb squad was called to the Farm Street home after a family member warned firefighters there could possibly be ammunition and hand grenades in the basement.

Residents who reported the fire also reported hearing explosions from inside the house, according to the fire chief.

Gentile said the homeowner was the only one inside at the time and was rushed to the hospital with injuries. The extent of the homeowner’s injuries is unknown at this time.

The cause of the fire does not appear to be intentional, according to a spokesperson for the DFS, though it remains under investigation.