Streets around the White House were closed Tuesday morning after a woman threw a package into the courtyard of the adjacent Old Executive Office Building.
The woman was taken into custody without incident and was being questioned by the Secret Service, said service spokesman Darrin Blackford. The package was being investigated but no immediate details were available.
The president was in the White House at the time of the incident.
In the 2008 presidential race:
Sen. Hillary Rodham Clinton, D-N.Y., began calling political operatives in Iowa and New Hampshire over the weekend to discuss her prospects in the 2008 presidential field, her first outreach to operatives in key states with early contests. Clinton has also made several key campaign staff hires in recent days.
John Edwards has signed on former Rep. David Bonior, a one-time leader in Congress who has close ties to labor unions, to manage a future presidential campaign. Edwards hasn't announced a bid yet, but an Edwards adviser said Thursday that Bonior will run the effort if Edwards decides to run. In the meantime, Bonior has signed on as a senior adviser to Edwards' leadership political action committee, the One America Committee.