Seoul, South Korea — South Korean air force jets fired 360 rounds of warning shots after a Russian military plane briefly violated South Korea’s airspace twice on Tuesday, Seoul officials said, in the first such incident between the countries. Russia however denied violating South Korea’s airspace and accused the South Korean planes of “non-professional” maneuvres that put its aircraft at risk.

Three Russian military planes — two Tu-95 bombers and one A-50 airborne early warning and control aircraft — initially entered South Korea’s air defense identification zone off its east coast before the A-50 intruded into South Korean airspace, according to the South’s Defense Ministry.South Korean fighter jets scrambled to the area, including F-16s, and fired 10 flares and 80 rounds from machine guns as warning shots, a ministry official said, requesting anonymity due to department rules.
The Russian reconnaissance aircraft left the area three minutes later, but it returned and violated the South Korean airspace again for four additional minutes later Tuesday, the ministry official said. He said the South Korean fighter jets fired 10 flares and 280 rounds from machine guns as warning shots again.U.S. accuses Russian fighter jet of unsafe interceptLater Tuesday, South Korea’s Foreign Ministry and the Joint Chiefs of Staff summoned Russia’s acting ambassador and its defense attache respectively to file a formal complaint with them. Separately, South Korea’s presidential national security adviser, Chung Eui-yong, told top Russia security official Nikolai Patrushev that South Korea sees Russia’s airspace violation “very seriously” and will take “much stronger” measures if a similar incident occurs, according to South Korea’s presidential office.The airspace the Russian warplane is accused of violating is above a group of South Korean-held islets roughly halfway between South Korea and Japan that has been a source of territorial disputes between them. Russia isn’t a party in those disputes.Russia’s (limited) denialState-run media in Moscow quoted the Russian Defense Ministry as saying, specifically, that the country’s Tu-95 bombers “did not deviate from the (flight) plan, in compliance with international regulations.”The statement quoted by Russia’s TASS news agency said the bombers remained at least 15.5 miles from the South Korean islands “and were not violating the South Korean airspace,” the ministry added. The statement accused two South Korean F-16 fighter jets of “non-professional” maneuvers, but insisted they fired no warning shots at the Russian aircraft.There was no explicit mention in the Ministry statements quoted by Russia’s state-controlled media of the Beriev A-50 — the Russian plane that South Korea says actually violated the airspace over the small islands. An official at the Ministry of Defense would not confirm to CBS News that an A-50 was flying with the Tu-95s, but said other journalists had asked about the aircraft and that an additional statement was likely to be released later in the day.