The shootings happened in the pre-dawn hours Jan. 4 at a house in far southeastern Dallas. Two were dead at the scene and another died later at a hospital.
A police statement says a tip led police Friday to the house next door to the shooting scene. With the resident's consent, police confiscated a shotgun for testing and concluded it was the weapon used in the shootings.
Jack Diwitt Hunt has been booked into the Dallas County jail with bond set at $500,000. Jail records list no attorney for Hunt.
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