DONIPHAN, Mo. (AP) — A 47-year-old southeastern Missouri man has pleaded guilty to killing two elderly couples whose bodies were found in their burned-out homes two years ago.

David Youngblood, of Doniphan, was charged with murder in the June 2010 deaths of his aunt and uncle, 80-year-old Irene and 77-year-old Loyd Piatt. He was also charged with killing 81-year-old Edgar Atkinson and 69-year-old Bonnie Chase, who were found dead three weeks later in their burned-out home in Current View.

KFVS-TV reports ( ) Youngblood pleaded guilty Monday. He was sentenced to four consecutive life terms in prison.

Youngblood's wife and daughter also are facing charges in the Chase-Atkinson deaths. A fourth suspect in those killings, Keith Boyles, waived arraignment Monday and is to appear in court Aug. 20.