SEOUL, South Korea — North Korean leader Kim Jong Un recently ordered preparations for launching attacks on South Korea, the South’s spy agency disclosed Thursday, as worries about the North grow after its recent nuclear test and rocket launch.

In a closed-door briefing to ruling Saenuri Party members, the National Intelligence Service said Kim’s spy agency has begun work to implement his order to “actively muster capabilities” to carry out cyber and other attacks on South Korea, according to one Saenuri official who attended the meeting.

Read more: Seoul’s spy service says North Korea is preparing attacks – Pacific – Stripes