North Korea has temporarily banned Malaysians from leaving the country in a growing diplomatic row over the killing of Kim Jong-nam, the estranged half-brother of the North Korean leader Kim Jong Un. North Korea's Foreign Ministry has notified the Malaysian embassy in Pyongyang of the reason for the measure and said it had hoped the case would be swiftly and fairly resolved in order to develop bilateral ties with Malaysia. <br/><br/>The state news agency KCNA said the ban would stay in place until the incident that happened in Malaysia is properly solved. Mr Kim, the estranged half-brother of the North Korean leader Kim Jong Un, was killed with a chemical nerve agent in Malaysia last month. Several North Koreans are being sought by police in connection with the killing. Two women – one Indonesian and one Vietnamese – have been charged with murder.