West African countries to investigate Nigeria border closure

West African countries have agreed to conduct an investigation into the impact of Nigeria's decision last year to close off its land borders to trade, Nigeria's presidency said on Monday. Nigeria has banned the import and export of all goods through its land borders since last August as part of what it describes as a campaign to tackle smuggling. Heads of state from the Economic Community of West African States agreed Sunday night to set up a committee "to study and make a full report on Nigeria's land border closure with her neighbours," said a statement from a spokesman for Nigerian President Muhammadu Buhari.