The ATF found at least two crude explosive devises in Baltimore while investigating the destructive fires during Monday’s rioting, ABC reports.
The devices were assembled with a small propane tank and charcoal in a bottle, material that was looted Monday, ATF said.
The devices were made to explode after being lit .
Authorities are reviewing countless hours of footage that was taken during the riots in hopes of catching the suspects.
There were seven fires during the riot.
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