As quick as they could launch the investigation, it is over.

The doctors who gave Heath Ledger the drugs that proved to be fatal are cleared.

The Drug Enforcement Agency was checking into two of the docs, but evidently there is not much there to investigate. They originally thought those two had prescribed the Oxycontin and Vicodin to the actor. These two doctors did not.

Ledger's doctor list is long. Some estimate that there are still at least 10 other doctors to investigate, many are actually in the UK.