On May 29, 2020, the Hennepin County Attorney's Office charged former Minneapolis Police Officer Derek Chauvin with third-degree murder (later raised to second-degree by Minnesota's attorney general) in the death of George Floyd. Former Officers Thomas Lane, J. Alexander Kueng, and Tou Thao were also charged with aiding and abetting the murder of Floyd.
These charges were based on the autopsy performed by the Hennepin County Medical Examiner's Office and a private "re-autopsy" performed at the request of the Floyd family's attorney. Based on those procedures, the medical examiner issued a revised autopsy report stating that Floyd had died of "cardiopulmonary arrest complicating law enforcement subdual, restraint and neck compression." In short, Floyd's death was allegedly caused by the manner in which the police had restrained him.
But the police defendants were charged before the medical examiner had received the report of Floyd's toxicology screen by NMS Labs of Horsham, Pennsylvania.
Then, on May 31, 2020, NMS Labs forwarded Floyd's toxicology report to the Hennepin County Medical Examiners' Office.
And that's when the proverbial fecal matter hit the fan.
At 7:30 p.m. on May 31, 2020, prosecutors "met" online with Dr. Andrew Baker, Chief Medical Examiner of Hennepin County, to discuss Floyd's toxicology report. Take a look at this recently released June 1, 2020, memorandum by Assistant County Attorney Amy Sweasy of that discussion.