A North Korean man has crossed the heavily fortified demilitarized zone to the South. The apparent defection is unusual because most people escape via China, not the heavily guarded border separating the two Koreas.

A North Korean man was taken into custody by the South Korean military after crossing the heavily fortified border between the two countries, according to the South’s Ministry of National Defense.

South Korea’s military says an unidentified North Korean man crossed the heavily fortified land border separating the two Koreas and is in custody.