Expelled North Korean ambassador Kang Chol unleashed another salvo from the Kuala Lumpur International Airport (KLIA) where he is expected to board a flight to Beijing at 6.25pm.

“I express grave concern over the extreme measures taken by the Malaysian government, (which is) doing great harm to bilateral relations of more than 40 years,” he told reporters via an interpreter.

Kang also defended his previous remarks which drew flak from Putrajaya, and once again suggested that police investigations into the murder of Kim Jong-nam have not been impartial...