"Activities of the law enforcement officers resulted in Mr. Floyd's death," forensic pathologist says Dr. Lindsey Thomas. Source: Pool Dr. Lindsey Thomas, a forensic pathologist, said the "subdual, restraint and compression" of law enforcement of George Floyd was "ultimately" the immediate cause of death. "This is a death were both the heart and lung stopped working. And the point is that it's due to law enforcement subdual, restraint and compression. That is kind of what ultimately is the immediate cause of death. It's the subdual, restraint and compression," Thomas said. Asked by the prosecution to explain what the terms "subdual restraint and neck compression" mean, Thomas said: