Ex-Borough President Subpoenaed in Apollo Theater Inquiry
NYS Attorney General's office, stepping up its investigation of Apollo Theater's tangled finances, issues subpoena to Percy E Sutton, former Manhattan Borough President, whose business relationship with foundation that manages theater is focus of inquiry; Sutton's company, Inner City Broadcasting, has been accused by African Heritage Network of striking illicit deal to retain syndication rights to television show It's Showtime at the Apollo (M)