A US judge has declared a mistrial in the case of a Baltimore police officer charged with involuntary manslaughter over the death of 25-year-old Freddie Gray.
Gray died after breaking his neck in the back of a police van in April, sparking protests.
William Porter is the first of six officers to face trial over his death, but the jury was unable to reach a verdict.
There were fresh protests outside court, and one man was arrested.
A new trial date will be set tomorrow.