Kim Jong-il appears at memorial

North Korean leader Kim Jong-il has made a rare public appearance for commemorations of the 15th anniversary of his father's death.

Observers said he looked gaunt and limped slightly while entering the crammed auditorium where the ceremony was held in the capital Pyongyang.

It was the second major state event the 67-year-old has attended since suffering a suspected stroke in August.

His poor health has led to concerns of a power struggle if he dies suddenly.