There has been a “smoke incident” in a section of the international airport in Lagos, Nigeria, forcing the evacuation of staff and passengers from the building, the airport authority said in a statement.

Firefighters battled to deal with the thick black smoke and prevent it from spreading to other parts of the terminal.

According to the airport authority, the smoke was caused by lithium inverter batteries located in the baggage hall of Terminal 1.

“We are pleased to report that the situation is presently under control and flight operations will not be affected by this incident,” the authority’s Yakubu Funtua told the BBC.