Government officials had gathered intelligence on Osama bin Laden and his network before a major attack. This information included details about his movements and financing. The CIA has now made many related documents public, shedding light on what was known at the time.

These documents show that security analysts were tracking bin Laden's support system and potential threats to US targets. They also reveal officials' understanding of his operations in various countries.

The release of these documents is significant, with the CIA director describing it as a notable act of transparency. Further details about the documents and their contents are available.