Empresas y finanzas
Chad says 33 Boko Haram militants, three troops killed in clash
"They tried to attack us on Choua Island but we pushed them back," Colonel Azem Bermandoa, a spokesman for Chad's army, told Reuters, referring to an island that sits near to where the borders of Nigeria, Chad, Niger and Cameroon meet.
News of the clash came as Muhammadu Buhari was sworn in as Nigeria's new president and regional armies are working to stamp out Boko Haram's insurgency.
(Reporting by Madjiasra Nako; Writing by David Lewis; Editing by Bate Felix and James Macharia)