Yusuf Birma, area manager of government agency the National Inland Waterways Authority (NIWA), said a rescue operation is still underway but added that four people have been confirmed dead and 20 rescued, Anadolu agency reported.

“The boat was carrying 180 passengers with 30 Bajaj motorcycles. The victims were going to a market in Malele in the Borgu local government area of Niger state from Kebbi, and the incident happened just one hour into their trip,” said Birma.

According to Birma, the mishap occurred as a result of overloading. He further stated that the boat was old and weak.

“We are still rescuing the victims. The mishap occurred as a result of overloading. The boat’s capacity is not up to the 180 passengers it carried. As we speak, only 20 people have been rescued alive, and four dead have been confirmed, while the remaining 156 people are still missing and they are believed to be underwater,” Anadolu agency quoted Birma as saying.