(Michigan City, IN) - Authorities are investigating an inmate at Indiana State Prison being found dead in a weekend fire.

Reports indicate 48-year-old Michael Smith died in a fire in his cell on Saturday. Two other individuals were treated at nearby hospitals and released. Whether the survivors were inmates or workers at the prison was not disclosed.

So far, no light has been shed on what caused the prison cell fire.

Smith was serving time for a voluntary manslaughter conviction out

of Newton County in 2013.