 At night, explosion happened in Belgrade, which is the city of Russia that borders Ukraine. Governor of Belgrade state wrote about this on his telegram channel. Governors stated that at night there were continuous explosion sounds which resulted in ruins of 11 residential buildings, totally causing damage of certain 9 apartments. As a result of explosion, 5 people died and 4 were injured. Governor did not explain the reason why explosion happened, but informed that defense system started working as a result of air attack. Russian telegram channels state that there were remains of Pan-Sir anti-aircraft missile complex found where the explosion occurred. However, Ukraine claims this weapon is not in the use of Ukrainian army.