Explosions are heard in Kyiv. Air defense forces are working, states the head of Kyiv military administration, Serhii Popko. “Air defense is operating in the capital. Stay in shelters until the air raid is over!” the message reads. Debris fell in two districts of the capital (updated 3:37 a.m.) Kyiv Mayor Vitaliy Klitschko said that explosions were heard in the capital. In particular, a fragment of a UAV is burning in the Desnianskyi district in an open area. All services are at the scene. The KCMA added that in the Desnianskyi district, preliminary, there is a fire in a residential area. Unit…