Nigeria's Security Agencies: Who Does What
Seven bodies, overlapping jurisdictions, and one constitutional rule that explains most of the arguments: there may be only one police force in Nigeria.
Nigerians deal with a lot of uniforms. This sets out what each body is legally responsible for, and where the lines between them sit.
Nigeria Police Force
Constitutional basis: section 214(1) of the 1999 Constitution — "there shall be a police force for Nigeria" and "no other police force shall be established for the Federation or any part thereof."
That single sentence is the origin of the state police debate. It bars states from establishing their own forces.
Operational statute: the Police Act 2020, which repealed the earlier Act. The general duties are prevention and detection of crime, apprehension of offenders, preservation of law and order, protection of life and property, and enforcement of laws and regulations.
Command: the Inspector-General of Police. Section 215 allows a state governor to give the state Commissioner of Police directions on maintaining public order — but the Commissioner may refer the matter to the President or the IGP before complying. In practice this means a governor is the chief security officer of a state in title, without command authority over the officers in it.
Strength: just over 370,000 officers. IGP Kayode Egbetokun said in August 2023 that 190,000 more were needed to reach the UN benchmark of roughly one officer per 450 citizens; Nigeria was then at about one per 600. We could not confirm a current 2026 strength figure from the Force itself.
DSS — Department of State Services
Domestic intelligence and counter-intelligence, internal security, counter-terrorism, protection of the President, Vice President, governors and visiting dignitaries, and investigation of crimes against the state.
Established by the National Security Agencies Act 1986, which split the former National Security Organisation into three bodies. Reports to the Presidency through the National Security Adviser. Director-General: Adeola Ajayi, in office since 26 August 2024.
NIA — National Intelligence Agency
Foreign intelligence and external counter-intelligence. Same 1986 Act.
DIA — Defence Intelligence Agency
Military intelligence, domestic and foreign. Same 1986 Act.
NSCDC — Nigeria Security and Civil Defence Corps
Established by the NSCDC Act No. 2 of 2003, amended by Act No. 6 of 2007. Its mandate is broader than most people assume:
- Protection of critical national infrastructure — power, pipelines, telecommunications, water, rail
- Disaster and emergency response
- Crime-prevention intelligence and surveillance
- Licensing and regulation of private guard companies — every security guard firm in Nigeria is regulated here
- Anti–oil theft, vandalism and illegal bunkering
- The Safe Schools initiative
- Inter-agency support
The Armed Forces
Section 217 of the Constitution: defending Nigeria's territorial integrity, securing its borders, suppressing insurrection, and acting in aid of civil authorities to restore order when called upon by the President, subject to conditions the National Assembly prescribes.
That last clause is the legal basis for the military's internal security operations in the north-east, north-west and middle belt. It is framed as exceptional. In practice it has run continuously for over a decade, which is itself a subject of legitimate debate — soldiers are trained and equipped for warfighting, not policing.
ONSA and the National Security Adviser
Section 4 of the National Security Agencies Act 1986 empowers the President to appoint a coordinator on national security as a Principal Staff Officer in the Office of the President. The duties are to advise the President on the intelligence agencies' activities and to coordinate the DIA, NIA and DSS.
The Terrorism (Prevention and Prohibition) Act 2022 and its predecessor designate ONSA as the coordinating body for all security and law-enforcement agencies, and give it responsibility for the National Counter-Terrorism Strategy. The NSA chairs the Joint Intelligence Board.
Nuhu Ribadu was appointed in June 2023, formally titled Special Adviser on Security.
Where the overlaps cause friction
Three recurring ones:
- Police and military in internal security. Section 217 makes military deployment exceptional and presidentially authorised; in practice troops conduct routine security duties in large parts of the country.
- Governors and commissioners of police. Section 215 gives a governor a power of direction that the commissioner can refer upward, which means state-level security decisions depend on federal cooperation.
- NSCDC and the police. Both have crime-prevention functions, and the boundary in practice is negotiated rather than clean.
Frequently asked questions
Is the governor in charge of security in his state? He is described as chief security officer, but he does not command the police. Section 215 gives him a power of direction that the Commissioner may refer to the IGP or President.
Can a state set up its own police force? Not under section 214(1) as it stands. A constitutional amendment is currently before the state assemblies.
Which agency regulates private security guards? The NSCDC.
Sources
- Police strength and the shortfall — TheCable
- NSCDC mandate — NSCDC and the NSCDC Act
- ONSA statutory mandate — TheCable
- Sections 214, 215, 217 — Constitute Project