Post mortem unable to determine cause of Kim Jong Nam's death

A cause of death has not yet been determined for the half-brother of North Korea's leader who died last week after apparently being poisoned in the budget terminal of a Kuala Lumpur airport, Malaysian officials said.
Noor Hisham Abdullah, the country's director general of health, told reporters the post mortem showed no evidence of a heart attack in Kim Jong Nam's death, or any sign of puncture wounds on his body.