Heath's Doctors Investigated by Feds

The DEA (Drug Enforcement Administration) is leading an investigation into the causes of Heath Ledger's death, specifically the doctors who prescribed him the drugs that were in his system at the time of his accidental overdose.  Heath's autopsy results, released on Feb. 6, were subpoenaed by the DEA due to the fact that Heath had taken six different prescription drugs including, Oxycodone, Valium and Vicodin.  A doctor in Texas and a doctor in California will now be questioned in regards to giving Heath the prescription, to determine if there was any wrong doing.