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North Korean leader Kim Jong Il dies

SEOUL, South Korea -- Kim Jong Il, North Korea's mercurial and enigmatic leader, has died. He was 69.

A state television presenter made the announcement Monday, saying that the leader died Saturday on a train trip, Reuters reported. The announcer said he had died of physical and mental over-work on his way to give "field guidance."

Kim is believed to have suffered a stroke in 2008 but appeared relatively vigorous in photos and video from recent trips to China and Russia and in numerous trips around the country carefully documented by state media.

The leader, reputed to have had a taste for cigars, cognac and gourmet cuisine, was believed to have had diabetes and heart disease.

The news came as North Korea prepared for a hereditary succession. Kim Jong Il inherited power after his father, revered North Korean founder Kim Il Sung, died in 1994.

In September 2010, Kim Jong Il unveiled his third son, the twenty-something Kim Jong Un, as his successor, putting him in high-ranking posts.

This is a breaking news story. Check back for more updates.