South Korea and the United Nations Command (UNC) launched a joint policing operation – the second of the year – at the Han river estuary on Thursday, Seoul’s Ministry of National Defense (MND) told NK News.

The action is aimed at preventing and repelling illegal fishing boat activity at the river estuary, which violates the July 1953 armistice with North Korea.

“The operation started from today (Thursday),” a press aide from the MND told NK News. “It is to last until the number of fishing boats invading the region – those engaging in illegal fishing activities – all disappear.”