North Korea celebrates leader Kim Jong-il's birthday

North Koreans are joining in mass celebrations to mark the birthday of their leader, Kim Jong-il.

A week of festivities is scheduled, including exhibitions of Kimjongilia, a hybrid flower named after the leader, ice-skating, and music shows.

Pyongyang's streets are decorated with lanterns and goodwill messages, state media reported.

The official line is that this is Mr Kim's 69th birthday; however, records show he was born a year earlier.

The BBC's Nick Ravenscroft reports from Seoul.