One big question hanging over the Derek Chauvin trial was answered this morning when Chauvin said he would invoke his fifth amendment right–and will not testify. Chauvin was asked by his attorney Eric Nelson: “I have repeatedly advised you that this is your decision and your decision alone, right?” Chauvin: “Correct.” Nelson: “I have advised you and we have gone back and forth on the matter is an understatement, right?” Chauvin: “Yes, it is.” Also today, Judge Pete Cahill ruled he will not let the state bring in just-discovered lab evidence about carbon monoxide poisoning. The state wanted to bring in the evidence that would refute Dr. David Fowler’s testimony from Wednesday that carbon monoxide poisoning may have been a factor in George Floyd’s death. The state plans to recall its witness, pulmonologist Dr. Martin Tobin. Judge Cahill issued a stern warning “if there’s anything {Tobin] wishes to add about carbon monoxide as far as environmental factors, but if he even hints at test results that the jury has not heard about, it’s going to be a mistrial, pure and simple.” Testimony is wrapping up in the case and closing arguments are expected Monday.