CATE BLANCHETT is in negotiations to star in the fourth installment of the “Indiana Jones” adventures.

Harrison Ford has already boarded the project, which will be produced by “Star Wars” creator George Lucas’ Lucasfilm Ltd. and directed by Steven Spielberg.

With David Koepp’s screenplay shrouded in secrecy, it is unclear what character Blanchett will play. However, sources said the Oscar-winning actress has landed a starring role.

Shooting will begin in June in Los Angeles and at undisclosed locations around the world. Paramount Pictures will release “Indy 4” in most of the world May 22, 2008.

In addition to her Academy Award win for “The Aviator,” she received a supporting nomination this year for her role in Richard Eyre’s “Notes on a Scandal.” (SD-Agencies)