The information about al-Masri's ascendency through the al-Qaeda leadership allegedly came from interrogations of al-Qaeda operatives captured in Pakistan.[citation needed] Al-Masri was suspected of helping recruit and train operatives who carried out the 7 July 2005 London Bombings. According to American intelligence officials, he was also suspected of involvement in the foiled plan to blow up airliners over the Atlantic Ocean in 2006.