More victims could still be found in remote areas that rescue teams have not reached, the government's National Emergency Management Agency said in a statement released on August 29.

Visiting the area, the agency's chief, Alhaji Muhammad Sidi, was shocked by the devastation and said the flooding was some of the worst the country had seen in recent times, the statement said.

The government is delivering aid to people displaced by the flooding in Ibadan and surrounding areas in Oyo state, the agency said.

Thousands of people have been displaced, and about 1,500 of them are being looked after in centers run by government officials and the Red Cross in the Ibadan area, Red Cross spokesman Umar Mairiga said on August 30.

They are being given emergency food rations, as well as mattresses, blankets and rubber mats, Mairiga said.

The United Nations said that 21 people had died and 73 were injured in the attack, of whom more than 20 remained in intensive care.