Nigeria, July 20 -- Three weeks after he was declared wanted by Nigeria's secret police, the Republican Police on Monday evening arrested Sunday Adeyemo, also known as Sunday Igboho.

Igboho, a campaigner for Yoruba self-determination, was arrested in neighbouring Cotonou, Benin Republic, while trying to travel to Germany.

A local newspaper in the neighbouring country, Banouto, reports quoted Beninise authorities as saying Mr Igboho was nabbed at Cardinal Bernardin International Airport in Cotonou.

He was "disembarked from his plane, arrested by the Beninese police while he was trying to travel to Germany and then transferred to the Cotonou Criminal Brigade."

It was learnt that under the agreements between the two countries, Mr Igboho'...