The Karaga constituency chairman of the governing New Patriotic Party (NPP), Tahiru Zakari, has been arrested together with three others by the police on Friday.
They are suspected to be part of those causing disturbances at Karaga.
The rest are Baba Ali Osman, Mohammed Alhassan and Abdullai Ziblim. The four were arrested on their way from Tamale to Karaga Friday evening and brought back to Tamale.
The suspects, according tothe Northern Regional Police Public Relations Officer ASP Yussif Tanko, were cited by the Karaga District Chief Executive, Alhassan Yabdow.
Tahiru Zakaria, according to the police, refused to honour an earlier invitation from the Regional Police Command to assist in police investigations into the disturbances.
The four are currently in police custody assisting in investigations.