Media reports of Kim Jong-un's sister staging coup not true

The National Intelligence Service (NIS) dismissed reports that claimed Kim Yo-jong ousted Kim Jong-un after a coup.

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. 

In July, the NIS dismissed rumours over Kim Jong-un's health problems as "groundless".

The North Korean leader earlier this month attended a defence development exhibition in Pyongyang and called for boosting military capabilities. 

He was also seen smoking cigarettes with officials at the event, according to photos released by the North.