NEW : A key witness is expected to testify Thursday . Ravi faces a 15-count indictment that includes hate crime charges . He is accused of streaming footage of his roommate having sex with another man . The victim was not identified in the case, but prosecutors say he's gay and had been dating someone at the time.
NEW : A key witness is expected to testify Thursday . Ravi faces a 15-count indictment that includes hate crime charges . He is accused of streaming footage of his roommate having sex with another man . Roommate Tyler Clementi killed himself , jumping from the George Washington Bridge .