NO OTHER DEVICES FOUND
Dispelling earlier reports of as many as seven devices being found around Boston, Gene Marquez, assistant special agent in charge for the U.S. Bureau of Alcohol, Tobacco and Firearms, said authorities had determined that the only bombs deployed in the attack were the two that detonated shortly before 3 p.m. EDT (1900 GMT) on Monday.
Any unexploded device might have provided a clearer picture of what materials were used and how the bomb was assembled, furnishing leads in the case.
http://news.yahoo.com/investigators-...9015--spt.html