"A court sentenced Erzhan Utembayev, the head of the Senate administration, to twenty years in prison for his involvement in the assassination of opposition politician Altynbek Sarsenbayev on 11 February 2006.Dariga Nazarbayeva, one of the most powerful Kazakh politicians and daughter of the President, responded to the conviction by calling on Nurtai Abykayev, the Speaker of the Senate, to resign.