A lockdown has been lifted at a northeastern Oklahoma hospital following a riot among young patients.
Willow Crest Hospital in Miami works with children and adolescents with behavioral and emotional issues.
Miami police say hospital patients started rioting just after 4:30 Sunday afternoon.
The police chief says 40 to 50 children were fighting. Officers and staff members broke up the fight.
A staff member told KOAM that a registered nurse possibly suffered a concussion in the process, but no children were hurt.