Updated at 12:21 p.m. EST on July 10

Twenty years after the Unabomber's manifesto was first published in The Washington Post, a man who was briefly questioned then as a potential suspect in the domestic terrorism investigation is still fighting the U.S. Department of Justice for access to documents—about himself.

James Negley, now a California businessman represented by Troutman Sanders, has sued the government several times since 1999 under the Freedom of Information Act. Negley's lawsuits have turned up responsive documents, but he contends the Justice Department is withholding some information. He filed his latest case in late June in Washington federal district court.