CNET is reporting that the U.S. Department of Justice has launched its own probe into the techniques Hewlett-Packard used to identify the source of media leaks. The U.S. Attorney’s Office for the Northern District of California is “requesting information similar to that sought by the California Attorney General,” the computer maker said today in a regulatory filing. HP’s board is scheduled this afternoon to resume yesterday’s meeting where it was going to decide the fate of Chairwoman Patricia Dunn. Dunn was in charge of the leak investigation in which phone records of board members and reporters were illegally obtained by private investigators who used false identities, a technique called “pretexting.”