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MOSCOW (AP) _ A car exploded Saturday outside a crowded McDonald's restaurant, killing one person and injuring seven others, Moscow police told a television station.

The ITAR-Tass news agency, citing police sources, said the blast was a terrorist act. The victims were on the restaurant's first and second floors and on the street near the car at the time of the explosion. The Interfax news agency said one of the victims was 5 years old.

Police said preliminary information suggested that an explosive device packed with metal filings was planted in the car. ITAR-Tass said bomb disposal experts said the device contained 11 pounds of TNT.

Russia's NTV television reported that everything but the car's license plate was destroyed.

Witnesses said the explosion, which happened around 1 p.m. near the capital's South-West metro station, could be heard from far away. The explosion happened at a time when the restaurant was crowded with Saturday afternoon diners.