Concerns over PM's health running while after two separate visits to hospital made in recent days

Japan's Prime Minister Shinzo Abe announced Friday he will resign over health problems, in a development that kicks off a leadership contest in the world's third-largest economy.

"I have decided to step down from the post of the prime minister," he told a press conference, saying he was suffering from a recurrence of the ulcerative colitis that ended his first term in office. 

Abe said he was receiving a new treatment for the condition, which needed to be administered on a regular basis which would not leave him with sufficient time to discharge his duties.

"Now that I am not able to fulfil the mandate from the people with confidence, I have decided that I should no longer occupy the position of the prime minister." Read more at i24