source: Premium Times (Nigeria); New Telegraph; Sahara Reporters; The Cable (Nigeria); Daily Independent (Nigeria); Blueprint
actor1: Unidentified Armed Group (Nigeria)
actor2: Police Forces of Nigeria (2015-) Prison Guards
location: Benin City
notes: On 19 October 2020, unidentified gunmen clashed with Nigerian Correctional Service Operatives at Oko Prison and Benin Prison in Benin (Oredo LGA, Edo) and set many inmates free. Reported casualties but exact figure unknown.