Testimony complete in Derek Chauvin trial after former cop says he will not testify

Testimony is now complete in the trial of Derek Chauvin, the fired Minneapolis police officer charged in George Floyd's death. The defense rested its case Thursday after Chauvin said he will not testify in his own defense. Chauvin spoke in court from the defense table just after court resumed on Thursday. 

"I will invoke my Fifth Amendment privilege today," Chauvin said. Prosecutors then re-called to the stand Dr. Martin Tobin, a pulmonologist who offered key testimony for the prosecution last week, saying Floyd died of low oxygen under the pressure of officers' weight on his neck, back and side. Thursday, Tobin rebutted some of the testimony of forensic pathologist Dr. David Fowler, who testified for the defense that Floyd suffered a heart arrhythmia due to his underlying heart disease.