http://www.bbc.co.uk/news/world-asia-pacific-11818005
South Korea says it has returned fire after North Korea fired around 200 artillery shells at one of its border islands, reportedly killing one marine.
The South's military was placed on its highest non-wartime alert after the shells landed on Yeonpyeong island.
North Korea has not yet commented on the incident, in which three marines and two civilians were also injured.
Correspondents say this is one of the most serious since the Korean War ended without a peace treaty in 1953.
South Korea says it has returned fire after North Korea fired around 200 artillery shells at one of its border islands, reportedly killing one marine.
The South's military was placed on its highest non-wartime alert after the shells landed on Yeonpyeong island.
North Korea has not yet commented on the incident, in which three marines and two civilians were also injured.
Correspondents say this is one of the most serious since the Korean War ended without a peace treaty in 1953.
