Ryan Kelly Chamberlain II

FBI spokesman Peter Lee said Chamberlain is wanted in connection for allegedly possessing explosives in his Russian Hill apartment on Polk Street, which were found on Saturday. Mark Mosher, creative director of San Francisco consulting firm BMWL, told the San Francisco Chroniclethat Chamberlain was hired by almost every local political consulting firm at one point or another. As recently as Friday, he was chiming in on Mosher's Facebook feed about gun control and mental health. Chamberlain graduated from Iowa State University in 1993 with majors in journalism and political science. He wrote music reviews for The Des Moines Register in 1995 and 1996. Some of his work included concert reviews of Van Halen, Hootie & the Blowfish and Brooks & Dunn. A Des Moines Register article from 1994 said Chamberlain previously worked as promotional director at Hooter's of Des Moines, and in Sen. Chuck Grassley's Washington, D.C., office. Grassley's office could not confirm Sunday whether Chamberlain worked there. He later moved to San Francisco, and at age 30, made a bid for a spot on the Republican Party County Central Committee in San Francisco, an organization that governs the local party and doles out critical endorsements. The past chair of the San Francisco Republican Party, Howard Epstein, has confirmed Chamberlain served on the Republican Central Committee in San Francisco before switching over to the Democratic Party. During the 2012 NFL season, Chamberlain was an independent contractor for The Chronicle and tweeted and posted links to Facebook to boost coverage for the San Francisco 49ers Insider iPad app, according to the Chronicle. Most recently, he worked in public relations for several Bay Area tech, apparel and marketing companies.