A judge declared a mistrial in the case of Baltimore Police Officer William Porter Wednesday.
Porter is the first of six officers facing charges in the death of 25-year-old black man Freddie Gray. Investigators found that Gray suffered a severe spinal cord injury in the back of a police van last April.
Luke Broadwater, a City Hall reporter for the Baltimore Sun, says the state attorney chose to try Porter first so that he could act as a witness against the other five officers. He says Wednesday's mistrial could now push those cases into 2017.