WASHINGTON -- John Walker Lindh's attorneys say he is telling federal agents everything he knows, and he wants Americans to forgive him for joining the Taliban military.

The United States would be interested in Lindh's knowledge of other fighters he met as well as places he had been in Pakistan and Afghanistan. Before his military training in Afghanistan, he spent time in a pro-Taliban border region of Pakistan.

Lindh attorneys Tony West and George Harris, in interviews last week, would not describe the information their client is providing, and government officials refused to comment.

Lindh, 21, is undergoing debriefings with several government agencies as part of a plea agreement. He would receive a maximum 20-year prison term if officials are satisfied with his cooperation and the judge approves the deal at a sentencing proceeding scheduled for Oct. 4.