Mitte died on Monday, October 12, in Brownsville, Texas, where authorities pronounced him dead at approximately 1.30 pm.
His representatives confirmed the death, subsequently reported as suicide, while officials said an autopsy would investigate the circumstances of his sudden passing.
His death prompted tributes from former colleagues, including Bryan Cranston, 70, who portrayed his father in Breaking Bad, and their former co-star on the smash show Aaron Paul, 47, who played Jesse Pinkman.
Mitte had appeared publicly at the Albuquerque International Balloon Fiesta on October 4, alongside former co-star Luis Moncada, eight days before his death.
He also attended a Beverly Hills screening of his film Talking to Strangers on September 30, continuing a career that included Switched at Birth, Triumph and The Guardians of Justice.