A 15-year-old boy charged with killing his adoptive mom and sister in 2012 near Tucumcari has pleaded guilty.
The teen entered his plea Thursday to murder charges and was sentenced to detention and treatment in a state Children, Youth and Families Department facility until age 21. That's the maximum the boy could receive after a judge ruled last month he was amenable to treatment.
Authorities say the teen fatally shot his 67-year-old Sue Day and killed her 48-year-old daughter Sherry Folts in their home on the outskirts of Tucumcari.
The teen's lawyer says he was abused and neglected as a child.
The Associated Press is not identifying the teen because he is a juvenile.
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