Updated

George Floyd died of a lack of oxygen from being pinned to the pavement with a knee on his neck, not drug use and health problems, a medical expert testified during former Minneapolis police officer Dereak Chauvin's murder trial Thursday.

"A healthy person subjected to what Mr. Floyd was subjected to would have died," said prosecution witness Dr. Martin Tobin, a lung and critical care specialist at the Edward Hines Jr. VA Hospital and Loyola University’s medical school in Illinois.

Dr. Bill Smock, a Louisville physician in forensic medicine, also testified that Floyd had died from "positional asphyxia."

FAST FACTS

    • Two medical experts testified that Floyd died from a lack of oxygen
    • Chauvin is charged with murder and manslaughter in connection with Floyd's May 25 death
    • Video shows Chauvin with his knee on Floyd's neck for roughly 9 minutes

    Chauvin is charged with murder and manslaughter in connection with Floyd's May 25 death

    Video shows Chauvin with his knee on Floyd's neck for roughly 9 minutes

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The Associated Press contributed to this report.