Two people were killed and a nearby city reported a rise in radiation levels when a rocket engine blew up at a testing site in northern Russia on Thursday, forcing authorities to shut down part of a bay in the White Sea to shipping.

The brief spike in radiation was reported by authorities in the nearby city of Severodvinsk, which has a population of 185,000. This apparently contradicted the Defense Ministry, which was quoted earlier by state media as saying radiation was normal.

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