South Korea has fired warning shots after a Russian military aircraft allegedly violated her airspace.

Officials in Seoul have described the incursion by the warplane as an unprecedented act. Seoul said three warplanes had initially violated the South’s aerial identification zone off its east coast.

Reports say one of the bombers then entered the country’s territorial sky, prompting Seoul to scramble fighter jets to the area to fire warning shots.

Although the warplane left the area following Tuesday’s incident, it later returned to South Korean airspace and further warning shots were fired.

South Korea’s top security adviser, Chung Eui-yong has also called on Nikolai Patrushev, the Secretary of the Security Council of Russia to assess the incident and take appropriate action.

“We take a very grave view of this situation and, if it is repeated, we will take even stronger action,” Chung said in a statement issued by South Korea’s presidential office.

Russia’s Defence Ministry has however denied that its strategic bombers had violated South Korean air space, accusing South Korean jets of carrying out dangerous manoeuvres which threatened its aircraft.