Pulmonologist says George Floyd died from a 'low level of oxygen'

A pulmonologist who reviewed George Floyd's medical records said Thursday he died "from a low level of oxygen."

Dr. Martin Tobin, a physician specializing in critical care of the lungs, posited that Floyd's prone position in the street and pressure on his neck and back led to a pulseless electrical activity arrhythmia "that caused his heart to stop." Floyd died May 25, 2020, in Minneapolis police custody, and his death sparked nationwide protests against police brutality.

"Mr. Floyd died from a low level of oxygen," he said.

"The cause of...