The fireball, travelling at a speed of 30 km per second according to Russian space agency Roscosmos, had blazed (熊熊燃烧) across the horizon, leaving a long white trail that could be seen as far as 200 km away.

　　Car alarms went off, thousands of windows were broken and mobile phone networks were interrupted for a short time. The Interior Ministry said the meteorite explosion, a very rare spectacle, also released a great explosive sound.

　　“I was driving to work. It was quite dark, but it suddenly became bright as if it were day，” said Viktor Prokofiev, 36, a resident of Yekaterinburg in the Urals Mountains. “I felt like I was blinded by headlights.”

　　The meteorite, which weighed about 10 tonnes and may have been made of iron, entered Earth's atmosphere and broke apart 30 km — 50 km above ground according to Russia's Academy of Sciences.

　　“The

　　energy released when it entered the Earth's atmosphere was equal to a few kilotonnes，” the academy said, “the power of a small atomic weapon exploding.”

　　No deaths were reported but the Emergencies Ministry said 20,000 rescue and clean­up workers were sent to Urals Region after President Vladimir Putin told Emergencies Minister Vladimir Puchkov to ease and help the victims.

　　The Interior Ministry said about 1,200 people had been injured, at least 200 of them children, and most from broken pieces of glass.

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