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.

An appeals court has paused the trial to finish deciding on whether another one of the five other officers that was involved with Gray's death will have to testify.