Warning shots fired at three North Korean ships crossing sea border
May 21, 2014 -- Updated 1032 GMT (1832 HKT)
[File] View of N.Korea's west coast from the S. Korea-controlled island of Yeonpyeong near the Yellow Sea on April 14, 2013.
- South Korean Navy fires at three North Korean patrol boats Tuesday
- North's boats crossed Northern Limit Line around 4 p.m., South Korean official says
Seoul, South Korea (CNN) -- The South Korean Navy fired warning shots after three North Korean patrol boats crossed the maritime border at the Yellow Sea, an official with the South Korean Defense Ministry said.
The North Korean boats crossed into the South Korean waters at the boundary, known as Northern Limit Line (NLL), at around 4 p.m. local time (3 a.m. ET) on Tuesday. The ships returned to the northern side after a South Korean naval vessel fired ten warning shots.
Defector: Kim doesn't control North Korea
The NLL is the de facto maritime border, which stretches from the western coast of the peninsula into the Yellow Sea, marking the boundary between the two neighbors. It was set by the United Nations following the Korean War but the North does not recognize it.
Incidents have been known to occur on and around the border, including one earlier this year when North and South Korean artillery batteries exchanged hundreds of shells.
READ: 3 found drones came from North Korea, South's defense ministry says
READ: Report: N. Korea fires on South during North's military drills; South responds
READ: Analysis: North Korea acts up again; how should West react?
Today's five most popular stories
Part of complete coverage on
December 24, 2014 -- Updated 0024 GMT (0824 HKT)
As soon as word broke that "The Interview" will hit some theaters, celebrations erupted across social media -- including from the stars of the film.
December 23, 2014 -- Updated 1844 GMT (0244 HKT)
Did a rogue hacker -- or the U.S. government -- cut the cord for the regime's Internet?
December 23, 2014 -- Updated 0822 GMT (1622 HKT)
The United States and North Korea have long been locked in a bitter cycle of tensions. But the current cyber conflict may be especially hard to predict.
December 18, 2014 -- Updated 1849 GMT (0249 HKT)
A defector from the North Korean government says the country's cyberwarfare is more dangerous than its nuclear weaponry.
December 22, 2014 -- Updated 1327 GMT (2127 HKT)
North Korea warns the United States that U.S. "citadels" will be attacked, dwarfing the hacking attack on Sony that led to the cancellation of a comedy film's release.
December 18, 2014 -- Updated 1543 GMT (2343 HKT)
North Korea's fury over the movie comedy "The Interview" appears to have taken the secretive state's oversensitivity to new extremes.
December 9, 2014 -- Updated 0157 GMT (0957 HKT)
A retired Silicon Valley executive and Korean War veteran was hauled off his plane at Pyongyang in 2013. Here's what happened next.
November 19, 2014 -- Updated 1057 GMT (1857 HKT)
A recent defector from North Korea tells of the harrowing escape into China via Chinese 'snakehead' gangs.
November 18, 2014 -- Updated 0039 GMT (0839 HKT)
CNN's Amara Walker speaks to a former North Korean prison guard about the abuses he witnessed and was forced to enact on prisoners.
November 18, 2014 -- Updated 0559 GMT (1359 HKT)
The chief of the Commission of Inquiry into North Korea's human rights says the world can no longer plead ignorance to the regime's offenses.
November 19, 2014 -- Updated 0034 GMT (0834 HKT)
Kim Jong Il's former bodyguard tells of the beatings and starvation he endured while imprisoned in the country's most notorious prison camp.
October 11, 2014 -- Updated 0543 GMT (1343 HKT)
Despite tense relations, China benefits from Kim Jong Un's rule in North Korea. David McKenzie explains.
September 15, 2014 -- Updated 0851 GMT (1651 HKT)
North Korea has "the world's most advantageous human rights system" and citizens have "priceless political integrity", the country declared.