Information for al-Qaida has been found in computers operated by the Arkansas Highway and Transportation Department, media outlets reported, and Homeland Security officials are investigating who put it there and how.

A group linked to some bombings in Iraq put links to the Arkansas server on its Web site. The information included audio and video clips.

The computer in Arkansas was an unsecured file transfer protocol server, used to transmit large files across the Internet.

A private investigative service called the Northeast Intelligence Network discovered the information in Arkansas and alerted reporters.

The agency has shut down the server and turned over the equipment to the FBI.