COBAIN SUICIDE NOT FORGED!

Letter found at scene puts Nirvana case under microscope

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Nirvana singer Kurt Cobain died in 1994, leaving behind wife; Courtney Love and daughter Frances Bean

ROCKER Kurt Cobain's officially declared suicide in 1994 is being reviewed by cops in Seattle, Wash.

, following the emergence of shocking new evidence indicating the Nirvana frontman may have been murdered, sources say.

In a world exclusive, Washington-based private eye Jason Jensen tells The National ENQUIRER that two Seattle cold case detectives and a King County assistant prosecutor secretly began investigating the case after he provided disturbing documentation alleging that a suicide note found at Cobain's death scene could have been forged.

Jensen says a pair of handwriting specialists found the note may have been partially written by another person — and one of the pros believes a so-called practice sheet found long ago in the possession of the Smells Like Teen Spirit singer's widow, Courtney Love, suggests someone may have been refining their ability to mimic Cobain's scrawl. Conspiracy theories have persisted that Love killed her husband, but police officially ruled it a suicide at the time.

The practice sheet was discovered among Hole singer Love's personal effects after she was arrested in Beverly Hills, Calif. — on a drug charge that was dropped — not long after Cobain's violent end.