Updated 4:35 p.m.
A spokesman for Western Democrat Sen. Michael Bennet (Colo.) e-mails:
We can confirm that there was a threat against Senator Bennet's office and that the FBI working with the Capitol Police have arrested the individual responsible for the threat. Per their advice, we are referring inquiries related to this matter to the Capitol Police. Michael has full confidence in the law enforcement agencies handling the case and remains focused on his job serving the people of Colorado
Federal authorities have arrested a man accused of repeatedly making threats to Colorado U.S. Sen. Michael Bennet's staff.
The most recent threats allegedly came on Thursday, two days before a gunman in Arizona killed six people and wounded 14 others, including a congresswoman.
According to an arrest warrant affidavit, John Troy Davis called Bennet's Denver office Thursday upset over his social security benefits and during the call said he, "may go to terrorism." He also allegedly said, "To get your attention, I will go down there and set fire to the perimeter," according to the affidavit.
During a call several days earlier, Davis, who lives in the metro area, told another Bennet staffer, "I'm just going to come down there and shoot you all," while complaining about social security benefits, according to the affidavit.
(Disclosure: Sen. Bennet's brother James Bennet edits The Atlantic.)