A rumour that North Korean leader Kim Jong-un was assassinated in Beijing has spread across social media websites all over the world.

The story apparently originated on Chinese microblog site Sina Weibo and was later picked up by Twitter users.

The reports were also carried on at least two fake BBC Twitter accounts, which have since been closed.

Analysts say the story, claiming he was killed by gunmen at the North Korean embassy, is highly implausible.

BBC News - Twitter fuels Kim Jong-un assassination rumour