Japanese Prime Minister Naoto Kan has announced his resignation, clearing the way for the country's sixth leader in five years. Mr Kan announced his decision to stand down at a Democratic Party of Japan (DPJ) meeting, broadcast by the Japanese media. He is expected to address a news conference later on Friday. Mr Kan said that as promised on 2 June, he is resigning as the leader of the DPJ. He said, once the new leader is selected, he will also resign as the Prime Minister. Kan's decision to stand down was widely expected, amid falling approval ratings and party infighting. Mr Kan has been criticised for failing to show leadership after the devastating 11 March earthquake and tsunami, and ensuing nuclear crisis. The ruling Democratic Party of Japan will choose a new leader on Monday. Mr Kan's successor as party head will most certainly become Japan's next prime minister.