Lawyer: 'Mary-Kate Olsen is Cooperating with Heath Ledger Investigation' 8/5/08

Latest: Mary-Kate Olsen knows nothing about the drugs which killed her friend Heath Ledger, her lawyer insists

Reports on Monday (04Aug08) suggested officials behind a federal probe into Ledger's January (08) death from an accidental overdose were targetting Olsen - but she was refusing to co-operate until she was guaranteed immunity from prosecution.

Her name was dragged into the case because the masseuse who found Ledger dead called Olsen before contacting the emergency services, prompting suspicions. The 22-year-old actress' lawyer Michael C. Miller now tells Usmagazine.com that Olsen has provided the Drug Enforcement Administration (DEA) with all the information she has on her late pal.

Miller says, "Regarding the Government's investigation, at Ms. Olsen's request, we have provided the Government with relevant information including facts in the chronology of events surrounding Mr. Ledger's death and the fact that Ms. Olsen does not know the source of the drugs Mr. Ledger consumed."

Miller also blasted reports that Olsen faces a Grand Jury subpoena if she refuses to co-operate, adding, "We don't know the source of the information being quoted in the media regarding the Government's inquiry, but these descriptions are incomplete and inaccurate."