Answer by taking a quote from the following article:

Al-Awlaki was born in Las Cruces, New Mexico, in 1971 to parents from Yemen, while his father, Nasser al-Awlaki, was doing graduate work at U.S. universities. His father was a Fulbright Scholar who earned a master's degree in agricultural economics at New Mexico State University in 1971, received a doctorate at the University of Nebraska, and worked at the University of Minnesota from 1975 to 1977. Nasser al-Awlaki served as Agriculture Minister in Ali Abdullah Saleh's government. He was also President of Sana'a University.

FBI agents identified al-Awlaki as a known, important "senior recruiter for al Qaeda", and a spiritual motivator. His name came up in a dozen terrorism plots in the US, UK, and Canada. The cases included suicide bombers in the 2005 London bombings, radical Islamic terrorists in the 2006 Toronto terrorism case, radical Islamic terrorists in the 2007 Fort Dix attack plot, the jihadist killer in the 2009 Little Rock military recruiting office shooting, and the 2010 Times Square bomber. In each case the suspects were devoted to al-Awlaki's message, which they listened to online and on CDs.  Al-Awlaki's recorded lectures were heard by Islamist fundamentalists in at least six terror cells in the UK through 2009. Michael Finton (Talib Islam), who attempted in September 2009 to bomb the Federal Building and the adjacent offices of Congressman Aaron Schock in Springfield, Illinois, admired al-Awlaki and quoted him on his Myspace page. In addition to his website, al-Awlaki had a Facebook fan page with "fans" in the US, many of whom were high school students. Al-Awlaki also set up a website and blog on which he shared his views.  Al-Awlaki influenced several other extremists to join terrorist organizations overseas and to carry out terrorist attacks in their home countries. Mohamed Alessa and Carlos Almonte, two American citizens from New Jersey who attempted to travel to Somalia in June 2010 to join the al-Qaeda-linked terrorist group Al Shabaab, allegedly watched several al-Awlaki videos and sermons in which he warned of future attacks against Americans in the US and abroad. Zachary Chesser, an American citizen who was arrested for attempting to provide material support to Al Shabaab, told federal authorities that he watched online videos featuring al-Awlaki and that he exchanged several e-mails with al-Awlaki. In July 2010, Paul Rockwood was sentenced to eight years in prison for creating a list of 15 potential targets in the US, people he felt had desecrated Islam. Rockwood was a devoted follower of al-Awlaki, and had studied his works Constants on the Path to Jihad and 44 Ways to Jihad.  In October 2008, Charles Allen, US Under-Secretary of Homeland Security for Intelligence and Analysis, warned that al-Awlaki "targets U.S. Muslims with radical online lectures encouraging terrorist attacks from his new home in Yemen." Responding to Allen, al-Awlaki wrote on his website in December 2008: "I would challenge him to come up with just one such lecture where I encourage 'terrorist attacks'".

Did al-Awlaki get caught for his role in the bombings?