SEATTLE, WASH. (KIRO) -- Agents investigating the 1971 hijacking by D.B. Cooper have clues in the case.
Seattle Special Agent Larry Carr said he believes it's possible the hijacker took his name from a French comic book that was popular at the time. The comic book features a fictional test pilot named Dan Cooper. In one episode published around the time of the hijacking, the cover illustration shows Cooper parachuting.
The comic wasn't translated into English, leading Carr to speculate that the hijacker who took the Cooper name spent time in Europe.
Meanwhile, agents are using technology to analyze pollen from a tie that Cooper left on the plane.
Using an electron microscope, paleontologist Tom Kaye is trying to figure out if the pollen came from a specific region of the country.
On Nov. 24, 1971, a man calling himself Dan Cooper hijacked a jet from Portland to Seattle, demanded parachutes and $200,000 in cash, then jumped off the plane in midflight and was never seen again.See more about the FBI's ongoing investigation at fbi.gov.