Nightly News   |  November 23, 2012

Blast rocks Massachusetts city

Video shows the moment when an explosion goes off in Springfield, Mass., and authorities believe a natural gas leak is to blame. NBC’s Brian Williams reports.

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This content comes from Closed Captioning that was broadcast along with this program.

>>> late news we're following. they were in the middle of evacuating part of downtown springfield , massachusetts today because of the reported gas leak . when that happened the explosion was caught by local television news station. the blast could be felt several miles away . several people were reported injured and apparently it came from a building housing a bar.