Kentucky State Police are investigating the death of a 70-year-old Perry County man who was found Tuesday at his house, and investigators arrested three people there on outstanding warrants.

Alva Combs, 70, was found at 6:45 p.m. as police investigated an anonymous report of a possible methamphetamine lab in a house on Robin Run in the Bonnyman community in Perry County, police said. Two containers that appeared to be one-step meth labs were found in a burn pile outside the house, but no evidence of a meth lab, contraband or hazardous materials was found inside the house.

Combs was found unresponsive on a couch and was pronounced dead at the house, police said.

His death does not appear to be related to the original meth-lab report, police said. An autopsy was scheduled.

The three arrested and taken to the Kentucky River Regional Detention Center were Wesley H. Fugate, 29; Alva D. Combs, 35; and John Combs, 56.