A Florida man has been charged with trying to help plan an attack on an upcoming 9/11 memorial in the US.
The US attorney's office announced said 20-year-old Joshua Ryne Goldberg was arrested and charged with distributing information relating to explosives, destructive devices and weapons of mass destruction.
Goldberg, of Orange Park, south of Jacksonville, is alleged to have begun communicating online with an FBI informer in July and gave that person information on how to build a bomb with a pressure cooker, nails and rat poison.
The charges state Goldberg also instructed the informer to place the bomb at a memorial in Kansas City, Missouri, commemorating the 14th anniversary of the September 11 attacks in 2001.
If convicted, Goldberg faces up to 20 years in federal prison.