Oscars organizers have warned flamboyant British actor-comedian Sacha Baron Cohen not to try to pull a stunt at this weekend\'s Academy Awards show, but said he is not banned from attending. The Hollywood Reporter cited sources as saying the star has told Paramount, the studio behind his latest movie \"The Dictator,\" that he plans to turn up on the Oscars red carpet in full bearded, uniformed character Sunday. Reports suggested that the Academy of Motion Picture Arts and Sciences had banned the \"Ali G,\" \"Borat\" and \"Bruno\" star altogether, but a spokeswoman denied this Thursday. \"The Academy would love to have Sacha at the show. We\'ve let him know how we feel about using the red carpet for a movie stunt and we\'re waiting to hear from him,\" she told AFP. Baron Cohen, who is in Martin Scorsese\'s 11-times Oscar-nominated movie \"Hugo,\" has a history of colorful stunts: in 2006 he turned up at the Toronto film festival in a cart pulled by a \"peasant woman\" to promote Borat. At the 2009 MTV Movie Awards, he descended from the ceiling on a harness dressed as an angel, eventually crashing into Eminem\'s lap, his buttocks in the rapper\'s face. Eminem voiced outrage, although it later emerged that the two men had organized the stunt in advance. In \"The Dictator,\" due out in May in the United States, Baron Cohen plays the lead role in \"the heroic story of a dictator who risks his life to ensure that democracy would never come to the country he so lovingly oppressed.\" A representative for Baron Cohen did not immediately reply to a request for comment on the story.