A US Coast Guard officer has been arrested for suspicion of planning a terror attack, court documents show.
Police found a cache of weapons and ammunition at the Maryland home of Christopher Paul Hasson.
The self-proclaimed White nationalist had drawn up a list of targets, including prominent Democratic politicians, according to prosecutors.
He has been inspired by the Norwegian mass murderer Anders Breivik.
"The defendant intends to kill innocent civilians in a scale
"The defendant is a domestic terrorist, at least committing acts dangerous to human life that are intended to affect government conduct."
Prosecutors said that in a draft email from June 201
US media say the 49-year-old is a lieutenant at Coast Guard headquarters in Washington and lives in the Maryland suburb of Silver Spring.
The Coast Guard confirmed that a member of the service was arrested but did not provide further details.
Attorney's office said that Fifteen guns and more than 1,000 rounds of ammunition were found in Mr Hasson's basement flat along with illegal drugs.  Image copyright
Since 2017, Mr Hasson had been studying parts of a manifesto by Anders Breivik.
A list of possible targets included Democrat House Speaker Nancy Pelosi and Democratic Senate minority Chuck Schumer as well as media personalities including MSNBC's Chris Hayes and Joe Scarborough.
Breivik has killed 77 people in 2011 in two terror attacks. He killed eight people with a car bomb in central Oslo and then shot dead 69 others, many of them teenagers, at a Labor Party camp.
Mr Hasson was arrested on Friday for weapons and drug charges and is due to appear in court on Thursday.