nprnews_____ = ||| lubuntu at wor3 89S7|||Medical Expert Says George Floyd Died From A Lack Of Oxygen||| kickerpage = |||no kicker pagenpr for NPRNEWS||| summarynpr = |||Last year, the local medical examiner’s office ruled Floyd’s death was a homicide. But the defense and prosecution disagree on whether Derek Chauvin caused Floyd’s death.

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Dr. Martin Tobin testifies Thursday in the murder trial of former police officer Derek Chauvin. Tobin told jurors that the way George Floyd was restrained effectively shut down his left lung.

Court TV/Pool via AP

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Court TV/Pool via AP

Live Updates: Trial Over George Floyd’s Killing

Medical Expert Says George Floyd Died From A Lack Of Oxygen

Last year, the local medical examiner’s office ruled Floyd’s death was a homicide. But the defense and prosecution disagree on whether Derek Chauvin caused Floyd’s death.