http://www.independent.co.uk/news/world ... 50861.html
South Korea has fired into North Korea after an "unidentified object" was sent towards the country.
South Korea's Joint Chiefs of Staff said in a statement that the South Korean military bolstered its air surveillance and broadcast a warning to North Korea in response to the object. It provided no other details.
The mystery flying object may have been a drone, local media speculated.
South Korea's Yonhap news agency, without citing a source, reported that South Korea fired about 90 machine gun rounds into the air and toward North Korea. It said South Korea was analyzing whether a North Korean drone had crossed the border.