Heath Ledger mystery still unsolved

Washington(ANI): The details of how Heath Ledger died have been delayed. According to a source in the New York City Medical Examiner's office, the actor's toxicology test results have been postponed. "They definitely will not be released. They were supposed to be released [Tuesday] but they will instead be released Wednesday morning," People quoted the source, as saying. The source did not specify the reason why the results have been held up.

The 'Brokeback Mountain' star was found dead on Jan 22 in his Manhattan apartment and police confirmed they discovered various medications in his bedroom and bathroom, including prescription sleeping pills and anti-anxiety medication. No illegal drugs were found in his home.

An initial autopsy performed the day after his death proved inconclusive, but the toxicology results are expected to confirm the cause of Ledger's death.