A new dispute over the rights to family photos used in Andre 3000's highly-anticipated Jimi Hendrix biopic is reportedly threatening to delay the film's September (14) release.

The rock icon's brother, Leon, is said to be unhappy his personal snaps appear in the movie and his name included in the credits, because he claims he never gave Oscar-winning screenwriter-turned-director John Ridley permission to use them.

Lawyers for Ridley, who adapted the script for 12 Years A Slave, are now seeking to remedy the situation as soon as possible in order to avoid having to postpone the cinematic release of Jimi: All Is by My Side, which stars Outkast rapper Andre 3000 as the late star, according to the New York Post.

A source says, "Leon has insisted that his name be removed from the credits and demanded a payment to the charity of his choice for the use of his family photos.

"Ridley's attorneys are bending over backwards to appease Leon."

A film spokesperson has declined to comment on the report.