A federal grand jury has indicted a California man on charges of plotting to use homemade bombs during a Christmas Day attack on San Francisco's Pier 39.
The indictment Thursday says 26-year-old Everitt Aaron Jameson intended to use pipe bombs to funnel people into an area of the popular tourist destination so he could shoot them.
The indictment replaces a criminal complaint against the Modesto tow-truck driver, who is also charged with attempting to aid a terrorist organization and distributing information relating to destructive devices.
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The FBI arrested Jameson on Dec. 22 after he talked about his plans to undercover agents, including one he thought was associated with the Islamic State group.
Assistant federal defender Charles Lee did not immediately return telephone and email messages from The Associated Press.