Search 9,000 building fires referred to the Detroit Fire Department Arson Squad for investigations from 2010 to mid-2013.

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More in this series:

Detroit pays high price for arson onslaught

Inside Arson Squad: Hectic days, senseless fires

Data show Detroit is arson capital

Coming Friday:

Firefighter's death prompts son to fight arson

Solutions to arson controversial

Coming Saturday:

Even Heidelberg fires tough to crack

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