NEW : Mother , sister disagree with finding , demand more investigation . The coroner ruled the death was a suicide by hanging . Taylor Armstrong agrees her father killed himself , a police report says . The ` ` Real Housewives of Beverly Hills '' cast member was found dead last month .
NEW : Mother , sister disagree with finding , want more investigation . The coroner ruled the death was a suicide by hanging . Taylor Armstrong agrees her husband killed himself , a coroner official says . The `` Real Housewives of Beverly Hills '' cast member was found dead last month .