His pocket litter supposedly contained two bank cards which showed that he had access to Saudi and Kuwaiti bank accounts; most al-Qaeda members used the preferred, untraceable hawala banking. According to James Risen: "It is not clear whether an investigation of the cards simply fell through the cracks, or whether they were ignored because no one wanted to know the answers about connections between al Qaeda and important figures in the Middle East – particularly in Saudi Arabia." One of Risen's sources chalks up the failure to investigate the cards to incompetence rather than foul play: "The cards were sent back to Washington and were never fully exploited. I think nobody ever looked at them because of incompetence."