Derek Chauvin trial: George Floyd died from ‘low oxygen’, doctor says – live

Martin Tobin says low oxygen levels caused damage to brain Also ‘caused an arrhythmia that caused his heart to stop’
Murder trial enters ninth day of testimony in Minneapolis The protesters who gather every day to demand justice

6.35pm BST

The court is on its lunch break.

There was a lot of seemingly watershed testimony for prosecutors during the first half of today’s proceedings. They elicited detailed commentary from a respiration expert to undermine any notion that Floyd’s death resulted from something other than obstructed breathing.

6.11pm BST

Tobin’s testimony has dealt another blow to the defense’s position that Floyd died from drug use and underlying health problems. Based upon Tobin’s analysis, Floyd’s breathing was normal before it was constrained—undermining any argument that fentanyl derailed his respiratory function.

After reviewing several factors, Tobin says: “fentanyl is not causing the depression of his respiration.”

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