(AP) — Authorities in the Ozarks say a mother and son found dead in their Laclede County home had been beaten and stabbed.

Officers found the bodies after being called to the home north of Lebanon around 7:30 a.m. Friday. The victims were later identified as 30-year-old Sheila Johnson and her 11-year-old son, Blake Johnson. Another boy, described only as a second-grader, was also in the home, unharmed.

KYTV in Springfield reports that authorities were looking for Sheila Johnson's husband, who is also the father of the boys. Investigators described him as a person of interest but said he could also be a victim.