Olivia Barker, USA TODAY
Lee Thompson Young died of a self-inflicted gunshot wound, according to his death certificate, which was procured by TMZ.
The body of the 29-year-old Rizzoli & Isles (and former Disney) star was found at his North Hollywood apartment on Aug. 19.
Young left no suicide note, and friends and family are said to be at a loss as to why he took his life. One theory: He had "depression issues."
