North Korea and South Korea after throwing accusations naval ships opened fire on their opponents , and worsen tensions in the disputed maritime border .

North and South Korea heats up , Shoot Each Other in Maritime Border

North Korea and South Korea after throwing accusations naval ships opened fire on their opponents , and worsen tensions in the disputed maritime border .

North Korea on Friday angrily denied its navy fired into South Korean ships near the de facto border between the two countries , and even claim they are victims of attack prevention .

Joint Chiefs of Staff South Korea said a North Korean ship on Thursday opened fire on the patrol ships near the disputed border - known as the Northern Limit Line . They said the ship was not shot and did not reply but also about anything .

But the North Korean Central Broadcasting Station reported Friday statement from the Korean People's Army ( KPA) said their ships and Chinese vessels was the one who fired .

The news report said battleships South Korean deep into North Korean waters . It said the incident occurred in the northern part of the maritime demarcation line and a warning shot in an attempt to intercept Chinese fishing vessels . The report says South Korea is trying to convince people of the KPA was responsible for the shooting .

South Korea 's Unification Ministry says North Korea is not uncommon to make a blatant refutation of the shooting incident .

Defense Ministry spokesman Kim Min - seok said Friday received a letter from North Korea officially denied aggression .

Through the letter , he said , North Korean provocations Thursday argued against their ships near Yeonpyeong island was not their responsibility . According to the spokesman , the reasoned argument is a lie shamelessly to avoid responsibility for the provocation and the scorn of the world.

NAC Statement on North Korean radio said they were preparing for combat alert and will " mercilessly destroy " what they call " military minions who likes to provoke . "

Kim , the South Korean defense ministry spokesman , said the government sent a reply letter as a serious warning not to incite . He said South Korea's clearly expressed will respond firmly if North Korea continues to provoke .

South Korea's military has strengthened the position of surveillance and their operations , said Kim , and remain alert for provocations by North Korea .

The sinking of the South Korean naval ship near the maritime border between the two countries in 2010 , killing 46 sailors and allegedly due to a North Korean torpedo attack . North Korea denied responsibility .VOA