International records / US diplomatic cables (WikiLeaks)
PRESIDENT YAR'ADUA FLIES YET AGAIN TO SAUDI ARABIA FOR MEDICAL TREATMENT
CONFIDENTIAL cable from Abuja, Nigeria to African Union | Central Intelligence Agency | Defense Intelligence Agency | Department of Energy | Economic Community of West African States (ECOWAS) | Joint Analysis Center Molesworth | National Security Council | Lagos, Nigeria | Riyadh, Saudi Arabia | Secretary of State | United States Africa Command | United States European Command