Naoto Kan
Japan's Prime Minister Naoto Kan drinks water during a debate with the main opposition Liberal Democratic Party leader Sadakazu Tanigaki (not in the picture) at the parliament in Tokyo June 1, 2011. Rebels in Kan's party on Wednesday cranked up pressure on the unpopular leader as he struggled with a nuclear crisis, threatening to back an opposition-sponsored no-confidence motion if he refused to step down. REUTERS/Kim Kyung-Hoon

Japanese Prime Minister Naoto Kan, who has been facing problems since the time of tsunami and earthquake in Japan, is at risk of losing a no-confidence vote in parliament later on Thursday, and will resign in the autumn, a private broadcaster TBS said.

Earlier in the day, the head of a tiny ruling coalition partner, the People's New Party, had urged the unpopular premier to resign once he has extended the current parliament session and dealt with Japan's earthquake-triggered crisis, including radiation leaks at crippled Fukushima nuclear plant.

Earthquake Japan Tsunami Japan