(NEWSER) – After a nationwide manhunt, the FBI says the San Francisco social media expert and political consultantsuspected of stockpiling explosives was captured within sight of the Golden Gate Bridge. When agents arrested Ryan Kelly Chamberlain II at a cafe, he "looked pretty surprised and frantic," a witness tells the San Francisco Chronicle. "He was asking for help." Before the arrest, an apparent suicide note was posted online, which Chamberlain had apparently written soon after his apartment was searched on Saturday and timed to go out yesterday.

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