Report: Officials Close Investigation Into Heath Ledger’s Death

Mary-Kate Olsen is off the hook.

The U.S. Attorney’s Office investigation into the death of “The Dark Knight” star Heath Ledger has been dropped, according to a law enforcement official who spoke to the Associated Press.

Authorities dropped the investigation “because they don’t believe there’s a viable target,” the official told the AP.

As previously reported on AccessHollywood.com, the federal Drug Enforcement Administration office in New York had obtained a subpoena in an attempt to force Mary-Kate Olsen to testify in front of a grand jury, as part of their investigation into Ledger’s death.

Authorities had been attempting to understand how Ledger acquired OxyContin and Vicodin without a legal prescription.

Olsen was the first person called by the masseuse who discovered Ledger’s lifeless body in January in his New York City apartment.

Olsen was reportedly seeking immunity before speaking to the DEA.

She broke her silence for the first time on Monday, when a rep for the actress told Access in a statement that she “had nothing whatsoever to do with the drugs found in Heath Ledger’s home or his body, and she does not know where he obtained them.”