London (AFP) - British singer Marianne Faithfull has told an interviewer her former boyfriend accidentally killed iconic rock singer Jim Morrison of The Doors 43 years ago. Morrison was found dead aged 27 in July 1971 in the bathroom of his Paris apartment, and no autopsy was performed on his body. Faithfull told Mojo magazine that her then-boyfriend Jean de Breteuil, known as the heroin dealer to the stars, had accidentally killed Morrison by giving him drugs that were too strong. The couple had travelled to Paris, and on their arrival de Breteuil said he had to visit Morrison's apartment. Faithfull stayed behind at their hotel. "I could intuitively feel trouble," Faithfull told the magazine. "I thought, I'll take a few Tuinal (barbiturates) and I won't be there." "And he went to see Jim Morrison and killed him. I mean I’m sure it was an accident. Poor bastard. The smack (heroin) was too strong? Yeah. And he died... everybody connected to the death of this poor guy is dead now. Except me." De Breteuil himself was found dead in Morocco some weeks after Morrison's death. But we knew this already, didn't we?