WASHINGTON (CNN) -- U.S. Capitol Police arrested 10 anti-war protestors in Sen. John McCain's Capitol Hill office Monday, police spokeswoman Sgt. Kimberly Schneider tells CNN.

The protestors, members of the anti-war organization "Code Pink," said the demonstration was one of more than two dozen similar protests held across the country on Monday. The group said more protests were planned targeting congressional offices in the coming months.

The demonstrations were held Monday to coincide with the fourth anniversary of the U.N. speech delivered by former Secretary of State Colin Powell outlining the threat Iraq posed to the world because of its weapons of mass destruction programs, according to a press release issued by the organization.

The demonstration in McCain's office was peaceful and no one was injured.

Last week six members from the group were arrested outside Sen. Hillary Clinton's, D- New York, Capitol Hill office.