Mosby called for system reform after the failure to find any criminal involvement in Gray's death. "We know that Freddie Gray did not kill himself," she contended.
Officer Goodson -- who faces second-degree depraved heart murder as well as manslaughter, assault, misconduct in office and reckless endangerment charges -- was responsible for getting him to a hospital, Porter said.
Goodson's fellow officers involved say that he is to blame for not ensuring Freddie Gray's safety in the back of the police van.
Prosecution and defense teams appealed to Maryland's highest court in the Freddie Gray Case. They are arguing about whether Officer William Porter must testify against fellow officers in the case.