Both messages about mining of Yekaterinburg "Koltzovo" were false. Second telephone call about explosive was received at 19:30 by Moscow time. As it turned out later, a child has called the police. According to source in Emergency Ministry of Sverdlovskaya oblast, operative services, arrived to place of occurrence, were dismissed by 21:00. Partial evacuation of passengers and personnel took place. Earlier on Tuesday at about 14:40 another telephone hooligan forced to evacuate "Koltzovo" airport. As a result 3 flights were detained - to Moscow, Khurgada and Samara. Explosive assemblies were not found in either case. Airport operates in normal regime.