A.T.F. are not known for being real smart.
Of course they would not think it was a terrorist, it exploded and is not a bomb.
The cover up continues.
Granny, have you seen this?
A Mosque in Kingman, Arizona, USA.
Mosques and Islamic Centers Around the World
http://www.islamicfinder.org/gallery/thumbnails.php?album=23&page=9