SANFORD, Fla. (AP) — The doctor who performed Trayvon Martin's autopsy says he has changed his opinion in recent weeks on two matters related to the teen's death.
Dr. Shiping Bao on Friday said he had changed his opinion about how long Martin was alive after being shot and the effect of marijuana detected in Martin's body at the time of his death.
The associate medical examiner said last November that he believed Martin was alive one to three minutes. But he testified Friday it was one to 10 minutes.
He also said Friday that marijuana could have affected Martin physically or mentally, even though he said it didn't last year.
Zimmerman is charged with second-degree murder for fatally shooting Martin. He is pleading not guilty, claiming self-defense.