[Russian Defense Ministry: explosion in Belgorod City caused by abnormal fall of Russian aircraft ammunition] April 21-the Russian Defense Ministry issued a notice late at night on the 20th that on the evening of the 20th local time, when a Russian Air Force Su-34 plane was flying over the city of Belgorod, the capital of Belgorod, the ammunition suspended on the plane fell abnormally, causing damage to a local residential building. The cause of the accident is still under investigation. Earlier, the governor of Belgorod said the explosion injured two people and damaged four apartments and four cars.