U.S. Imposes Enhanced Security At Federal Buildings Due To Terror Threats

Homeland Security Secretary Jeh Johnson announced Tuesday that he was enhancing security at key government buildings across the country as a precautionary measure due to heightened terror threats across the world.

"The reasons for this action are self-evident: the continued public calls by terrorist organizations for attacks on the homeland and elsewhere, including against law enforcement and other government officials, and the acts of violence targeted at government personnel and installations in Canada and elsewhere recently. Given world events, prudence dictates a heightened vigilance in the protection of U.S. government installations and our personnel," Johnson said in a statement.

The procedures of the Federal Protective Service, which protects over 9,500 federal facilities, will "vary and shift from location to location, and will continually be reevaluated," the agency said.

Johnson's announcement comes in the wake of a terror attack on Parliament Hill in Canada, where a man gunned down a Canadian soldier standing guard at a war memorial and subsequently attempted a rampage at the country's parliament.