Seoul, Oct 24 (TIWN) South Korea's spy agency said on Sunday that media reports of North Korean leader Kim Jong-un's sister staging a coup against her brother are not true at all.

A separate government official also said such reports are not true.   Citing a report from US-based tabloid "Globe", some news outlets here said Kim Yo-jong staged a coup between May 6 and June 5, and removed Kim Jong-un from the post.   The report claimed Kim Jong-un at recent events is actually an impostor, pointing out that his appearance is different than the past, with substantial weight loss.   Speculations about Kim Jong-un's well-being have been brought up by media regularly since last year.