North Korea has executed five senior security officials for making false reports to leader Kim Jong Un, according to South Korea's intelligence agency.
The comments by the National Intelligence Service in a private briefing to politicians come as Malaysia investigates the poisoning death there of Kim's estranged elder half brother, Kim Jong Nam.
That investigation is still ongoing, but South Korea says it believes Kim Jong Un ordered the assassination.
South Korean politician Lee Cheol Woo said the intelligence agency told politicians five North Korean officials in the department of recently purged state security chief Kim Won Hong were executed by anti-aircraft guns for the false reports.
It was not clear what false reports they allegedly made.
The NIS has a mixed record when reporting North Korea intelligence.