SPRINGFIELD, Massachusetts - Massachusetts officials say four people are dead after at least two tornadoes swept through western and central parts of the state.

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Scott MacLeod, a spokesman for the state's emergency management agency, confirmed the deaths Wednesday night but said there were no details about the circumstances.

The storms have also caused an unknown number of injuries and extensive damage.

Gov. Deval Patrick declared a state of emergency and called up 1,000 National Guard troops.

One of the tornadoes struck in Springfield, the state's third largest city.