FORT SMITH, Ark.—Authorities in Fort Smith have found human remains in the back yard of a home where a man committed suicide.

The discovery followed a fire at a home on North 6th Street, in which firefighters found a man with self-inflicted stab wounds, police said. The man died later at a hospital.

Friday morning, investigators were told by neighbors that there was a rumor the man had a body buried in his back yard.

Police found a shallow grave in the yard containing a body that appeared to have been there for several months.