4. Kurt Cobain
The lead singer of the American rock band Nirvana was found dead in his home on April 8, 1984. The Seattle Police Department incident report states: “Kurt Cobain was found with a shotgun across his body, had a visible head wound and there was a suicide note discovered nearby.”
He had a long history of using drugs, and checked out of a drug rehabilitation facility just few days before the suicide. There was some conspiracy theory that Kurt was murdered, but it was never given much credit because he was reported suicidal by his wife many times.