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.
"I would much rather prefer a judge render a not guilty verdict than to drop charges, because at some point cops have to fully go through the system and not get off in a partial way."
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.
Jury selection in Baltimore police officer Caesar Goodson's trial is set to begin on Monday in the Freddie Gray case.