Aron Smith's probable cause of death released

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CARTWRIGHT, OK -- We now know the probable cause of death of a man found dead in Cartwright the day after he allegedly killed his estranged girlfriend.

The medical examiners autopsy report states, 63-year-old Aron Lynn Smith likely died from mixed drug toxicity.

Smith was found dead in his pickup in Cartwright on February 7th.

He's suspected of fatally shooting 47-year-old Yvonne Gauthier the night before at her home in the 100 block of Cedar Drive, just outside of Denison.