Mary-Kate Olsen 

She’s off the hook!

The U.S. Attorney’s Office has closed its investigation into Heath Ledger’s accidental overdose death and will not enforce a subpoena against Mary-Kate Olsen.

The investigation was closed without any charges being filed.

The federal probe focused on how he obtained Oxycontin and Vicodin, two powerful and often-abused painkillers for which Ledger had no prescription.

Masseuse Diana Wolozin found Ledger lying on his bed shortly after 3 p.m., and called Olsen three times, records show. The longest call lasted one minute and three seconds.

Olsen, 22, was subpoenaed by a federal grand jury on April 23, but her attorney had been in negotiations with federal authorities since then, the source said.

Olsen had wanted immunity before testifying. Olsen’s attorney released a statement saying the actress “had nothing to do” with Ledger’s drugs and had already provided “relevant information” to investigators.

The U.S. Attorney’s Office and Olsen’s rep both declined to comment.

Hmm…Mary-Kate is lucky.  She seemed to be sweating it out about the investigation.  Something is still shady about the whole situation.