NEW : Officials condemn brutal , fatal stabbing of Ecuadoran in Long Island . Marcello Lucero , 37 , and a friend were attacked late Saturday night . Jeffrey Conroy , 17 , was charged with assault as a hate crime . Six other were charged with gang assault ; all seven plead not guilty .
NEW : Officials condemn attack , fatal stabbing of Ecuadoran in Long Island . Marcello Lucero , 37 , and a friend were attacked late Saturday night . Jeffrey Conroy , 17 , was charged with manslaughter as a hate crime . Six other teenagers charged with gang assault ; all seven plead not guilty .