“The federal Drug Enforcement Administration office in New York has confirmed that they have issued a subpoena that would force Mary-Kate Olsen to testify in front of a grand jury.”

Mary-Kate Olsen has been refusing to talk to federal investigators about Heath Ledger’s death until she is granted immunity from prosecution, the New York Post reported Monday.

“Though Olsen’s attorney has rejected multiple requests from federal officials to talk to the actress, she could face a grand-jury subpoena to testify, according to the Post.

“Unlike inquiry into Ledger’s death by the New York Police Department, which was completed with Olsen’s cooperation, federal investigators are seeking information from the actress about where he got his drugs and medicines.”

In a statement issued Monday, Olsen’s lawyers said that the actress had nothing to do with the drugs that killed Heath Ledger and she has already cooperated with police in the investigation.

Access Hollywood broke the news about the subpoena last night but did not give a time line as to when Olsen might be called to testify.

At the time of Heath Ledger’s death, five types of medications were found in his body according to the DEA. Three were obtained through doctors in Texas and Los Angeles and two, Oxycontin and Vicodin, he had acquired somehow without legal prescriptions.

Mary-Kate was the first person Heath’s masseuse contacted after she discovered Heath’s lifeless body on January 22 in his New York apartment.

A lawyer not associated with the case, high-profile defense attorney Benjamin Brafman (who has defended P. Diddy and Michael Jackson in the past), told “Access Hollywood” that seeking immunity is not the same as admitting guilt. “It may not mean anything other than she’s getting good legal advice,” Brafman told the show. “You don’t know what the DEA may suspect in this case, and I think it’s a cautious way to proceed. I think it would be wrong to assume she’s done something criminal simply because she’s invoking her Fifth Amendment against self-incrimination.”

I don’t quite understand why Mary-Kate isn’t talking;she is making herself look more suspicious. I mean one of her really good friends is dead; unless she had something to do with it, I would think she would give up all the info she knows. That stupid troll. It is about time she gets subpoenaed.