April 1997: Five North Korean soldiers cross the Demilitarized Zone in Cheolwon, Gangwon-do, and fire on South Korean positions.
June 1997: Three North Korean vessels cross the Northern Limit Line and attack South Korean vessels two miles (3 km) south of the line. On land, fourteen North Korean soldiers cross 70 m south of the center of the DMZ, leading to a 23-minute exchange of fire.[1]
