Twin troll Mary-Kate Olsen, whose role in the accidental drug overdose death of actor Heath Ledger has been vexingly unclear, has been given another free pass from an official inquiry
The Manhattan U.S. Attorney's Office closed its probe into Ledger's Jan. 22 death without any charges being filed - and won't enforce a grand jury subpoena against the diminutive 22-year-old actress
The decision by the U.S. prosecutors will force the Drug Enforcement Administration to find another agency to investigate if it wants to get to the bottom of Ledger's accidental drug overdose death in Manhattan
It's a huge victory for Mary-Kate and her lawyer.
The DEA was trying to find the source of the drugs that killed Ledger; most were legally prescribed in El Paso, Texas, and Los Angeles, sources said.
Everybody connected with Ledger and his death has been interviewed and cooperated - with the exception of Mary-Kate Olsen.
Instead, she's declined to cooperate and has insisted on immunity in return for talking to the feds.
The source said the feds might approach the city's Office of the Special Narcotics Prosecutor.
Once the death was ruled an accidental overdose, cops decided not to try to talk to Olsen - despite the fact that the original panicked calls from Ledger's apartment had gone out to her, and that she was dating him at the time.
