Firefighters work the scene where an explosion has killed two people and 

Firefighters work the scene where an explosion has killed two people and damaged more than a dozen homes in the Richmond Hill subdivision, late Saturday, Nov. 10, 2012, in Indianapolis. (AP Photo/The Indianapolis Star, Matt Kryger) NO SALES
Associated Press
Firefighters work the scene where an explosion has killed two people and damaged more than a dozen homes in the Richmond Hill subdivision, late Saturday, Nov. 10, 2012, in Indianapolis. (AP Photo/The Indianapolis Star, Matt Kryger) NO SALES
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