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DALLAS -- Thomas Ty Pickens, the grandson of oil tycoon T. Boone Pickens, died of acute heroin intoxication, the Tarrant County Medical Examiner's office has ruled.

Police were dispatched to the off-campus apartment of the 21-year-old TCUstudent on the morning of January 29. Pickens was pronounced dead at a hospital.

Last month, another TCU student, 21-year-old Brennan Trainor Rodriguez, was charged with evidence tampering in connection with the Pickens case.

According to documents obtained by News 8, investigators believe Rodriguez hid drugs and paraphernalia including spoons, syringes, cotton swabs, heroin, Xanax, and brownies laced with marijuana in a maintenance closet across from his apartment in the 1800 block of Rogers Road.

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