drug addiction for years. in this 2002 exclusive interview with abc's diane sawyer, houston was asked about her drug use. >> is it alcohol? is it marijuana? is it cocaine? is it pills? >> it has been at times -- >> all? >> at times. >> reporter: ten years after the interview, houston still battled those demons. >> cocaine use indicated an acute use, and it appeared that the cocaine had been used in the time period just probably immediately prior to her collapse in the bathtub at the hotel. >> reporter: but ultimately it was the water in that hotel bathtub that ended her life. >> we know that when she slipped under the water, she was still alive. we have evidence of drowning. so there was water in the lungs. >> reporter: houston's family released this statement saying while they're saddened by the