Report: Suicide bomber at CIA base was a "regular informant"

The informant was a Pakistani and a member of the Wazir tribe from the Pakistani tribal area North Waziristan, according to the same source. The base security director, an Afghan named Arghawan, would pick up the informant at the Ghulam Khan border crossing and drive him about two hours into Forward Operating Base Chapman, from where the CIA operates.

Because he was with Arghawan, the informant was not searched, the source says. Arghawan also died in the attack.