You can run, but you can't hide! The federal Drug Enforcement Administration office in New York has confirmed to Access Hollywood that Mary-Kate Olsen is going to be subpoenaed in the Heath Ledger investigation.
Olsen will have to testify in front of a grand jury about her involvement with Heath's death. MK got the first phone call after Heath's death, and her security guards rushed over to his apartment. But she has since refused to speak about it without an "immunity."
Five medications were found in Heath's body at the time of his death, according to the DEA. The center of the investigation is how he was able to get Oxycontin and Vicodin without a legal prescription. And the DEA is hoping MK has those answers for them. We'll keep you posted on this one!