
As questions swirled about how the attacker managed to penetrate security at the base in Khost province, near the Pakistani border, the Afghan defence ministry again denied reports that any ministry personnel were involved.
The government had no comment and a spokesman for President Hamid Karzai said there would be no official involvement in any investigation.
The CIA agents were killed on Wednesday when a suicide bomber breached the forward operating base (FOB) Camp Chapman and detonated an explosives-filled vest in a basement gym....