Tensions remain high on the Korean peninsular

Amid growing military tensions between North and South Korea, Seoul mobilized troops and police 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 Cheonan earlier this year, which claims 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. A joint military and police investigation found that the diving suit was abandoned by a fisherman and the explosion was not suspicious.