Iran's tenth presidential election was held on 12 June 2009, with incumbent Mahmoud Ahmadinejad running against three challengers. The next morning the Islamic Republic News Agency, Iran's official news agency, announced that with two-thirds of the votes counted, Ahmadinejad had won the election with 62% of the votes cast, and that Mir-Hossein Mousavi had received 34% of the votes cast. The European Union, United Kingdom and several western countries expressed concern over alleged irregularities during the vote, and many analysts and journalists from the United States, Europe and other western based media voiced doubts about the authenticity of the results. Meanwhile many OIC member states, as well as Russia, China, India, and Brazil, have congratulated Ahmadinejad on his victory. Mousavi issued a statement saying, "I'm warning that I won't surrender to this charade," and urged his supporters to fight the decision, without committing acts of violence. Protests, in favour of Mousavi and against the alleged fraud, broke out in Tehran.