North Korea apologises for 'unfortunate' killing of South Korean official

Kim Jong-un says death should not have happened' after man shot in North Korean waters

North Korea's leader, Kim Jong-un, has apologised for the unexpected" and unfortunate" killing of a South Korean official this week after he drifted across the countries' maritime border, possibly in an attempt to defect.

In a message to the South Korean president, Moon Jae-in, Kim said he was very sorry", adding that the incident, which has raised tensions between the two countries, should not have happened", according to media reports.