Nightly News   |  February 10, 2011

Gas explosion rocks Pennsylvania neighborhood

A gas explosion killed five people in Allentown, Pennsylvania, making it the third deadly natural gas line fire in the U.S. in recent months. NBC's Brian Williams reports.

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This content comes from a Full-Text Transcript of the program.

BRIAN WILLIAMS, anchor: A natural gas explosion shook Allentown , Pennsylvania , overnight, leveling at least two homes, sparking fires that kept burning for hours in the downtown section. Five people were killed, including a baby, and one other is missing. It's not clear what caused the explosion.