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The scheduled Jan. 14 trial of Elmer Wayne Henley, 17, accused in the Houston mass murders, probably will be postponed until February or March, Henley's lawyers said. Henley is due to go on trial on six murder indictments. David Owen Brooks, 18, is charged with four counts of murder in the case. Henley and Brooks told Houston police that Dean Arnold Corll, 33, killed the youths in a series of homosexual torturemurders.