Pakistani intelligence agents are still missing:
Two former agents of Pakistan's Inter Services Intelligence (ISI) -- high-profile figures who often publicly defended the Taliban -- are reportedly being held by an extremist group in the western tribal regions of Pakistan.

Sultan Amir Tarar, commonly known as Colonel Imam, had often boasted that he mentored the reclusive Taliban leader Mullah Mohammad Omar -- along with tens of thousands of Afghan extremists during the 1980s and '90s.

Khalid Khawaja, another former ISI agent who has gone missing with Imam, recently petitioned a Pakistani court to prevent the government from extraditing Taliban operational chief Mullah Abdul Ghani Baradar to Afghanistan. Baradar was arrested in a joint U.S-Pakistani raid in the southwestern port city of Karachi in February.

In late March, the two accompanied British-Pakistani documentary maker Asad Qureshi to the Taliban's Waziristan stronghold. But all now appear to have been abducted by a little known extremist group called Asian Tigers.