The South Korean military has enhanced its watch on North Korea following Pyongyang’s issuance of a travel ban on ships in the Yellow Sea.

A military official said the North issued the ban in waters off the coast of Jeungsan County and Mundeok County in South Pyeongan Province.

He added that the travel ban is raising the possibility of another missile launch by North Korea.

In regards to missiles launched by the North on Monday, the official said consensus opinion is that the launches were part of a usual military drill or test.

North Korea fired five KN-02 missiles --- two in the morning and three in the afternoon --- into the East Sea Monday.