Authorities say two bodies found buried in eastern Kansas are believed to be those of two homicide victims.

The Kansas Bureau of Investigation said Wednesday in a news release that the bodies were found late Tuesday on a rural property west of Pittsburg. The release says the remains are believed to be those of 65-year-old Kenneth McNabb and his mother, 87-year-old Betty McNabb. They were reported missing Friday.

A relative was arrested Monday on suspicion of second-degree murder, criminal desecration of a body, and interference with a law enforcement officer in the killings.

KBI spokeswoman Melissa Underwood said she couldn’t discuss specifics about why the bodies are believed to be those of the victims. She says autopsies are pending. She also couldn’t discuss who owned the property.