Hunter telephoned me on Feb. 19, the night before his death. He sounded scared. It wasn't always easy to understand what he said, particularly over the phone, he mumbled, yet when there was something he really wanted you to understand, you did. He'd been working on a story about the World Trade Center attacks and had stumbled across what he felt was hard evidence showing the towers had been brought down not by the airplanes that flew into them but by explosive charges set off in their foundations. Now he thought someone was out to stop him publishing it: "They're gonna make it look like suicide," he said. "I know how these bastards think . . ."
Hunter S. Thompson ... was indeed working on such a story.http://www.prisonplanet.com/articles/march2005/020305thompsonwarned.htm