BALTIMORE (AP) — The former chief medical examiner for Maryland who testified on behalf of Officer Derek Chauvin in the George Floyd murder trial is a defendant in a federal lawsuit over the death of a man who died under similar circumstances.

Dr. David Fowler recently served as a key defense witness for Chauvin.

Fowler testified that he would have ruled Floyd’s cause of death as “undetermined.”

A lawsuit in Maryland over the 2018 death of 19-year-old Anton Black alleges Fowler ignored evidence that police caused Black’s death by pressing their weight on him for several minutes.

The Maryland Attorney General’s Office filed a motion earlier this month seeking to have the lawsuit against Fowler dismissed.