The death of Nirvana frontman Kurt Cobain should be reinvestigated to settle whether it was suicide or murder, said the former chief of Seattle police. Norm Stamper said: "I would tell you right now if I were the Chief of Police, I would reopen this investigation."The 27-year-old rock star was found dead from a gunshot wound in April 1994 at his home in Seattle and Stamper's officers were called to the scene. A suicide note was found beside his body, but many fans have long believed Cobain was murdered.Stamper, who left police work in 2000 to become a writer and blogger, spoke to the makers of Soaked in Bleach, a new documentary that suggests Cobain's widow, Courtney Love, played a role in his death.Stamper said his investigators should not have discounted the possibility Cobain was murdered."We should in fact have taken steps to study patterns involved in the behaviour of key individuals who had a motive to see Kurt Cobain dead," he said, according to excerpts in Spin Magazine.Love's lawyers said that the idea she was behind her husband's death was "a widely and repeatedly debunked conspiracy theory" and demanded that the cinemas not show the film.Soaked in Bleach is the first documentary from Benjamin Slater and has received mixed reviews from critics."Despite a low-rent aesthetic ... Soaked presents evidence one has a hard time dismissing," wrote the Hollywood Reporter. ..