SAN FRANCISCO -- A federal grand jury has indicted a Northern California social media expert who was the subject of an FBI manhunt on bomb and gun charges.
The U.S. attorney's office in San Francisco announced the charges against 42-year-old Ryan Chamberlain on Friday.
The indictment alleging possession of a destructive device replaces a criminal complaint that accused Chamberlain of trying to build a remote-controlled bomb. The indictment also charges Chamberlain with possessing a handgun without serial numbers.
Chamberlain's public defender didn't immediately return a call seeking comment.
Chamberlain was arrested last week after a three-day manhunt that authorities say was prompted by the discovery of bomb-making materials at his apartment. Authorities also said they found lethal toxins that were purchased online.
Chamberlain faces up to 10 years in prison if he's convicted.