Defense testimony has wrapped up in the trial of former Minneapolis police officer Derek Chauvin.

A forensic pathologist testified that "a vulnerable enlarged heart with narrow vessels, drugs in his system increasing the risk of arrhythmia and potential carbon monoxide poisoning contributed to George Floyd's death."  The pathologist said the manner of death is difficult to point and he would rule it "undetermined."

The Hennepin County medical examiner determined that Floyd's death was a homicide.

Closing arguments are set to begin Monday.