Authorities say the charges were added in Summit County Juvenile Court Monday after 71-year-old Thomas Allen III died Friday from injuries suffered in last month's fire in Akron.
Akron police have said the teen admitted to setting the fire. He was originally charged in Juvenile Court with arson and attempted murder.
An Akron Fire Department spokeswoman said a dog was killed in the fire. The teen also is charged with aggravated arson and cruelty to animals.
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