The search for the people behind the blasts  The search for the
people behind the blasts  Posted April 17, 2013 16:01:00
American police and counter-terrorism agencies have embarked on
a massive investigation to identify the perpetrators of the
Boston attack.  Source: 7.30 | Duration: 6min 11sec  Topics:
defence-and-national-security, law-crime-and-justice, nsw,
united-states   CHRIS UHLMANN, PRESENTER: American police and
counter terrorism agencies have launched a massive investigation
to identify those responsible for the attack. President Barack
Obama has declared they will be found, and brought to justice.
The bombings have some of the signatures of an Al Qaeda style
attack synchronised at a high profile event, in the full glare
of the media spotlight. The design of the bombs which included
ball bearings means they could have been made by anyone with
instructions downloaded from the Internet, so the bomber could
have been home grown. Matt Peacock has this report.  MATT
PEACOCK, REPORTER: 12 years ago the