Senior North Korean official reappears after 'forced labour' report

Photo shows Kim Yong-chol attended an art performance with Kim Jong-un on Sunday

A senior North Korean official who was reportedly sent to a labour camp has attended a concert alongside the country's leader, Kim Jong-un, state media have said.

There had been speculation about the fate of Kim Yong-chol after a South Korean newspaper reported last week that he had been subjected to forced labour and "ideological education".