Koku Anyidoho has been arrested by the Criminal Investigation Department of the Ghana Police Service.
He was picked up at the Press Centre in Accra on Tuesday. The NDC was having a press conference to react to the controversial Ghana-US Military Cooperation agreement when the arrest was done.
About 16 officers besieged the press centre to effect the arrest.
Koku Anyidoho was seen seated at the back of a vehicle flanked by the NDC National Chairman Kofi Portuphy and the General Secretary and were driven to the police head quarters.