By Paul Cruickshank and Tim Lister
He was born and raised in the United States, and killed by the United States. And now from beyond the grave he inspires a new generation of would-be terrorists to attack the United States.
Militant cleric Anwar al-Awlaki continues to speak through sermons posted online, and U.S. officials are investigating whether his words may have influenced Boston bombers Tamerlan and Dzhokhar Tsarnaev.
A U.S. government official told CNN's Jake Tapper on Tuesday that "the preachings of Anwar al-Awlaki were likely to have been among the videos they watched." A U.S. government source had previously told CNN that Dzhokhar Tsarnaev had claimed the brothers had no connection to overseas Islamist terrorist groups and were radicalized through the Internet.
Al-Awlaki lived in Colorado, California and Virginia before leaving the United States in 2002. At one point he met two of the men who would be among the 9/11 hijackers, an encounter later investigated by the FBI. There is no evidence that al-Awlaki knew of their plans.