According to Major Staff of Seoul, a Navy ship Pyongyang North crossed the border line ending in the territorial waters of the South.
"To ask for its withdrawal, our military sent a message and fired warning shots into the air," said the official Seoul.
On his part, the North responded with shots and no retreat, "forcing us to qëllonim again. Then he left the ship, "reports further south.
The event in question indicates that the provocations between the parties can not easily be ended, although a few days ago South and North agreed to resume formal talks ranking, interrupted since February this year.
Southern government clarified that the agreement for the resumption of these talks was reached during a surprise visit to the North Korean delegation to attend the closing ceremony of the Asian Games.
The delegation was led by two senior communist country, considered close advisers leader Kim Jong-un. The first meeting between the delegations are expected to be within a few weeks.
One of the leaders of the delegation to Pyongyang is Hwang Pyong-so, who is considered the second most powerful in North Korea, while South party talks led by the Minister of Reunion, KIHL-jae Ryoo.
Since four years, two states of the same nation did not have any relationship, even informally. Changing course in Pyongyang by international analysts interpreted as bound by the miserable condition of the communist country's economy.