In late February 2008 46 parliamentarians wrote to UN Secretary General Ban Ki-Moon accusing the ruling party of “persecution, arbitrary arrests, extrajudicial executions, and assassination” of its opponents.[184] Then, on March 8, grenades were thrown at the homes of Alice Nzomukunda and three other prominent opposition politicians, Pasteur Mpawenayo, Mathias Basabose, and Zaituni Radjabu, who had abandoned the CNDD-FDD in 2007 and become outspoken critics. The former residence of Leonard Nyangoma, president of the opposition party CNDD, was also targeted.[185] All of them had signed the letter.[186]