When did Kurt Cobain kill himself?

Many of Kurt's friends and associates, including Grohl and Novoselic, have remained silent on the matter. In August of 2005, however, Sonic Youth's Kim Gordon was asked about Kurt's death in an interview for UNCUT magazine. When asked what she thought to be Kurt's motive in committing suicide, Gordon replied, "I don't even know that he killed himself. There are people close to him who don't think that he did..." Asked if she thought someone else had killed him, Gordon answered, "I do, yes."