CLINTON, Mo. (AP) — A Missouri woman who authorities said had been held captive in a wooden box for months before being freed about three weeks ago has been found shot to death, along with her 17-year-old son.

Clinton police say 46-year-old Sandra Kay Sutton and her son, her son, Zachary Wade Sutton, were found early Thursday.

Lt. Sonny Lynch says Sedalia authorities are searching for Sutton’s former boyfriend, 47-year-old James Barton Horn Jr. Horn was charged earlier this month with kidnapping, armed criminal action and unlawful use of a weapon for allegedly keeping Sandra Sutton in a wooden box for four months. Lynch said Horn is “absolutely” a suspect in the deaths.

He says Sandra Sutton had moved away from Sedalia, where she had lived with Horn, to live with relatives.