The South Korean government blamed North Korea for these attacks, as well as incidents that occurred in 2009, 2011 and 2012, but Pyongyang denies the accusations.
Den sydkoreanske regering anklagede Nordkorea for at stå bag disse angreb, såvel som hændelser, der indtraf i 2009, 2011 og 2012, men Pyongyang benægtede anklagerne.