Floyd's level of carbon monoxide within normal range -witness
The defense on Wednesday (April 15) called a forensic pathologist, former Maryland chief medical examiner Dr. David Fowler, who said Floyd, whose death was ruled a homicide at the hands of the police, really died of heart disease, and that the exhaust fumes of the adjacent police car may have also poisoned him.
Tobin returned to the stand on Thursday (April 15) as a rebuttal witness in an effort to undermine Fowler's testimony about carbon monoxide poisoning.
Prosecutors also said they had been contacted by Dr. Andrew Baker, the Hennepin County chief medical examiner who performed the autopsy on Floyd, to disclose previously unpublished test results that showed normal carbon monoxide levels in Floyd's blood.
The judge said prosecutors had been notified by the defense earlier this year that Chauvin would advance a theory of carbon monoxide poisoning. And so he denied the request to admit the new evidence, saying it was too last-minute in a way that was prejudicial to Chauvin. Cahill warned prosecutors that if Tobin even mentioned the existence of the results, he would declare a mistrial.
Tobin was questioned by prosecutors for only a few minutes, telling jurors that previously shared data showed that the level of carbon monoxide was "within the normal range."
