Dr. Martin Tobin, a Chicago physician who has written textbooks and specialized in respiratory and critical care medicine for decades said Floyd "died from a low level of oxygen."
A medical expert testified in the Derek Chauvin murder trial that George Floyd died from a lack of oxygen late last spring as the now-fired Minneapolis police officer knelt on Floyd's neck. Testimony resumes Friday morning.
Testimony on Thursday brought more attention to the defense and prosecution's opposing views about what caused George Floyd's death. Three medical experts for the prosecution were called to the stand.
Three forensic scientists testified Wednesday for the prosecution about the process of gathering and testing evidence from George Floyd's vehicle and a squad car.
Two scientists with the Minnesota Bureau of Criminal Apprehension and a third scientist from a Pennsylvania lab rounded out the day's prosecution witnesses. Testimony concluded about 4:45 p.m., with proceedings set to resume Thursday.
Though Chauvin's attorney had told jurors that they would hear from passengers in the car who saw Floyd use drugs, Morries Lester Hall is avoiding testifying.