South Korean troops fired warning shots after North Korean soldiers briefly crossed land border

South Korean soldiers fired warning shots after North Korean troops violated the land border earlier this week, South Korea's military said Tuesday.

Some North Korean soldiers who were engaged in unspecified work on the northern side of the border briefly crossed the military demarcation line on Sunday, South Korea's Joint Chiefs of StaffChiefs of StaffChiefs of Staff said.

Those North Korean soldiers returned to their territory after South Korea's military fired warning shots and issued warning broadcasts, the Joint Chiefs of Staff said.