determine exactly what happened. the fbi is taking the lead in e vestigation. itlo so through the boston joint terrorism task thisil be a combined federal, state and local effort. it wille a ongoing investigation, it is a criminal potential is a potential the terrorist investigation. reporter: and there asking the public for help. anybody who has any information pertaining tohis crimeo ll. reporte so far n fm suspects in the bombings, but law eormentsayhe have a number of activeea. they have issued a be on the lookout bulletin for somne ack malwith a black backpackd or and black sweatshirt. he could be a foreign national with an accent. auorie s h triedo gn access to a restricted area li a ao looking for a penske truck that tried to gain access to a restricted area. a federal law enforcement official told cnn both bombs