SEOUL, May 13: North Korea has executed its defence chief on treason charges after he fell asleep at an event attended by leader Kim Jong Un, South Korean media quoted Seoul’s National Intelligence Service as saying in a briefing to lawmakers today. North Korean Defence Minister Hyon Yong Chol was purged and then executed by firing squad, media reported. Hyon was said to have shown disrespect to Kim by dozing off at a military event, the reports said, citing the South Korean intelligence agency’s briefing with lawmakers. (AGENCIES)