sentences:  Shema was the state Attorney General and Commissioner for Justice (August 1999 - May 2003) during Umaru Musa Yar'Adua's first term as Governor of Katsina State, after which he returned to his private legal practice in Kaduna.In January 2005, he was appointed as a member of the People's Democratic Party (PDP) Special Committee on the Anambra Crisis.He then served as the deputy national chairman (North-west zone) of the People's Democratic Party (September 2005 - November 2006), At the same time, serving as Chairman of the PDP National Disciplinary Committee, and Chairman, Governing Council, Peoples Democratic Institute.