Acting on a tipoff by the CIA, Thai intelligence puts 9/11 hijackers Khalid Almihdhar and Nawaf Alhazmi on its watch list. In addition, it puts an alias al-Qaeda leader Khallad bin Attash is using (Salah Saeed Mohammed bin Yousaf) on the watch list (see January 20, 2000). The CIA is aware that the three men arrived in Bangkok on January 8 (see January 8, 2000), but seems to be unable to locate them in Thailand (see January 13, 2000). The Thai authorities will note their departure from Bangkok on January 15, but will not stop them and apparently will not inform the CIA of this for some time (see January 15, 2000 and March 5, 2000). [Bamford, 2004, pp. 230; 9/11 Commission, 1/26/2004, pp. 6 ] The CIA is apparently unaware of Alhazmi’s full name at this point (see January 8-9, 2000), but this does not prevent the watchlisting. The CIA will not add the three to the US watch list until late August 2001 (see August 23, 2001).