Article updated: 11/13/2012 10:14 AM

Concerns about furnace fuel Indiana blast probe

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Citizens Energy workers continue their investigation Monday, Nov. 12, 2012, at the site of an explosion at a house in Indianapolis. The search for what caused a massive, deadly explosion that rocked an Indianapolis neighborhood turned to natural gas Monday, with officials checking gas lines and a homeowner saying a problem furnace could be to blame.

Associated Press

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As investigators try to determine what caused a deadly explosion that ravaged an Indianapolis subdivision, an expert says people shouldn't be alarmed by a homeowner's suggestion that his faulty furnace could be to blame.

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