The controversial documentary about an alleged cover-up surrounding Princess Diana's death is being shelved indefinitely by the film's producers.
The docu-film called "Unlawful Killing" raised some major conspiracy theories about the circumstances surrounding the deaths of Princess Di and the car's other passenger Dodi Al-Fayed ... even placing a lot of blame on the Royal Family.
The film -- a 4-year project financed by Al-Fayed's father -- sold last year to several foreign markets at the Cannes Film Festival for 2012 distribution (not in the U.K. of course) ... but has now been shelved permanently.
A producer for the film told The Hollywood Reporter the problem was the uninsurable nature of the documentary -- no company could guarantee protection from losses stemming from lawsuits that might occur due to the film's controversial content.
The producer says, "It became undoable. We are all disappointed."
Princess Diana's Death
7/8/2012 3:10 AM PDT BY TMZ STAFF
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