Federal authorities announced Friday that the FBI has captured and extradited Zubayr al Bakoush, one of the key participants behind the 2012 terrorist attack on the U.S. diplomatic compound in Benghazi, Libya, bringing him to American soil to face long-pending criminal charges.

Attorney General Pam Bondi said al Bakoush arrived at Joint Base Andrews around 3 a.m. and is now in U.S. custody, marking a major development more than 14 years after the deadly assault that killed four U.S. citizens. Al Bakoush made his initial court appearance in Washington, D.C. Friday afternoon.