Size & Borders

6,320 km² | 17 LGAs | Borders: Imo, Anambra, Ebonyi, Cross River, Akwa Ibom, Rivers

Methodology

Tier 1 · primary

Courts. Gazettes. National archives.

Tier 2 · corroborating

OCCRP. HRW. BudgIT. TheCable.

Tier 4 · tertiary, flagged

Wikipedia only where primary is pending. Always labelled.