03/08/2008 AT 10:00 AM EST
Before his Oscar-nominated role in Brokeback Mountain
, Heath Ledger
wrote a will leaving everything he owned to his parents and sister, New York's Daily News
The 28-year-old actor, who died of an accidental prescription drug overdose
earlier this year, filed a three-page will in his native Australia in April 2003. The will preceded Ledger's relationship with Brokeback
costar Michelle Williams and the 2005 birth of their daughter, Matilda Rose.
A series of documents filed in Manhattan Surrogate's Court revealed that the actor had less than $145,000 in New York assets at the time, including a $25,000 Toyota Prius and $20,000 in furniture and fixtures. His greater wealth, including trust funds, Australian properties and the Brooklyn townhouse he once shared with Williams, is uncertain.
It's unclear whether there will be any provisions for Williams or Matilda Rose, now 2. The bulk of Ledger's estate will be handled in Australia, according to the report.
The actor's lawyer has asked a judge to seal the documents for privacy. Ledger's spokeswoman, Mara Buxbaum, declined to comment.