WASHINGTON (AP) — The Homeland Security Department says security will be increased at federal government buildings in Washington and other cities.

Secretary Jeh Johnson announced the move Tuesday, one week after a gunman in Ottawa shot a soldier and stormed Canada’s seat of government.

Johnson says the increased security is in response to “continued public calls by terrorist organizations for attacks on the homeland and elsewhere.”

Johnson would not identify the buildings that will receive enhanced security or disclose the specific security measures to be taken by the Federal Protective Service. The agency protects nearly 10,000 federal facilities.