MOSCOW, Dec 27 (Reuters) - A car bomb exploded in the southern Russian city of Pyatigorsk near the violence-plagued Caucasus on Friday, killing at least three people, the Itar-Tass news agency reported, citing a security source.
Itar-Tass said the car exploded near a mall, while Interfax reported it badly damaged a traffic police building.
(Writing by Steve Gutterman; Editing by Mark Trevelyan)
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