A high-profile defector activist said his organization launched balloons carrying anti-regime leaflets toward North Korea on Wednesday to mark North Korea Freedom Week, despite Seoul’s repeated calls for activists to exercise “restraint.”

Fighters for a Free North Korea (FFNK) released the balloons from Ganghwa Island in Incheon, near the inter-Korean border, according to leader Park Sang-hak.

“At around 11 p.m., marking the 20th North Korea Freedom Week, we attached 200,000 leaflets, 1,000 USB drives and 200 booklets to 20 large balloons and sent them,” Park told NK News.

Video of the launch provided by FFNK shows a poster attached