The original court ruled her death an accidental alcohol poisoning.The pathologist's tests revealed that Winehouse's blood-alcohol level
was 416 milligrams per 100 milliliters of blood. The level considered
lethal is 350 milligrams per 100 milliliters of blood, and the legal
limit to drive in Britain is 80 milligrams of alcohol. The court was reopen because of Suzanne Greenaway was accused of not being a registered lawyer for five years.

http://www.cnn.com/2012/12/17/showbiz/amy-winehouse-probe/index.html?hpt=ju_c2