A meteor streaked across the sky and exploded over central Russia on Friday, sending fireballs crashing to earth which shattered windows and damaged buildings, injuring more than 500 people.

People heading to work in Chelyabinsk heard what sounded like an explosion, saw a bright light and then felt a shockwave, according to a Reuters correspondent in the industrial city 1,500 km (950 miles) east of Moscow.

The fireball, travelling at a speed of 30 km (19 miles) per second according to Russia’s space agency Roscosmos, had blazed across the horizon, leaving a long white trail in its wake which could be seen as far as 200 km (125 miles) away.

Car alarms went off, windows broke and mobile phone networks were interrupted. The Interior Ministry said the meteor explosion had caused a sonic boom.

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

“I felt like I was blinded by headlights,” he said.

No fatalities were reported, but President Vladimir Putin, who was due to host Finance Ministry officials from the Group of 20 nations in Moscow, told Emergencies Minister Vladimir Puchkov to help those affected.

“Unfortunately, the normal work of some industrial enterprises was disrupted, people have suffered as has social infrastructure - kindergartens, schools,” Putin told his Emergencies Minister Sergei Puchkov in televised comments.

“First of all, it is necessary to think about how to help the people, and not only to think about it, but to do it immediately,” Putin said.