Possiy Two News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Up, and the unexploded devices. clearly there is a lot of ground to cover. the fbi is taking the lead in the investigation. >> it will do so through the boston joint terrorism task force. this will be a combined federal, state and local effort. it will be an ongoing investigation. it is a criminal investigation that is -- has the potential, is a potential terrorist investigation. >> reporter: and they're asking the public for help. >> anybody who has any information pertaining to this crime, to call -- >> reporter: so far no firm suspect in the bombings. but law enforcement sources say they ha...

Penske truck that tried to gain access to a restricted area. a federal law enforcement official told cnn that both bombs were small. and initial tests show no c-4 or other high-grade explosive material. suggesting the packages used in the attack were code devices. still >> there's a certain level of sophistication. having made these bombs before, it's not easy. you just can't get it on the internet, make two of these bombs go off fairly closely together. so somebody had some experience. somebody practiced. >> reporter: sourcesel cnn that one, possiy two, unexploded devices also were found. pot...