London Telegraph 
Friday, June 18th, 2010
Balloons released into the sky by a kindergarten in South Korea sparked a security alert when the country’s military mistook the formation for parachuting North Koreans.
Amid growing military tensions between the North and South, Seoul mobilised troops and police early on Thursday after a resident of Ansan, 22 miles south-west of the South Korean capital, reported that 40 to 50 flying objects resembling parachutes had fallen on a mountain the previous night.
Upon inspection, the objects were identified as helium balloons released by children at a nearby school.
Tensions on the Korean peninsular have been high since the sinking of the South’s warship earlier this year. Seoul has said that the ship was torpedoed by Pyongyang.
Earlier this month, an explosion Yeonpyeong Island, near the sea border with North Korea, along with the discovery of a diving suit on the island’s shoreline, also sparked an alert.