SEOUL, April 5 (Xinhua) -- A South Korean military fighter jet crashed in southeastern region Thursday afternoon, with no casualty identified yet, multiple local media reported citing the country's Air Force.

The F-15K fighter jet, which took off from a military air base in Daegu city, North Gyeongsang province at 1:30 p.m. local time (0430 GMT), crashed in Chilgok county in the same province, some 290 km southeast of Seoul, at around 2:38 p.m.

The life and death of the two pilots aboard the crashed jet are yet to be confirmed. The combat airplane was on its way back to the air base after finishing a mission, when the accident occurred. The aircraft was believed to have fallen down into a mountain of the county.

It marked the first time since June 2006 when the F-15K fighter jet, a major South Korean combat airplane, crashed. South Korea's military is reportedly operating about 60 F-15K combat planes.

The latest fighter jet crash took place in March 30, 2016 when a F-16D fighter jet crashed in northeastern area.