UPDATE: U.S. Capitol police say that the lockdown has been lifted.

The U.S. Capitol in Washington D.C. is in lockdown following reports of gunshots outside the building, according to the Associated Press.

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CNN quotes Senate Majority Leader Harry Reid as saying there has been “one injury.”

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The shooting occurred two blocks away from the Capitol at Second Avenue and Maryland Street, the Washington Post reports that a suspect has been taken into custody.

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In a notice distributed by email, the U.S. Capitol Police advised everyone to “close, lock and stay away from external doors and windows.The notice said gunshots have been reported on Capitol Hill.

The U.S. Capitol issued the following statement regarding the shooting:

SHELTER IN PLACE. Gunshots have been reported on Capitol Hill requiring staff in all Senate Office Buildings to immediately shelter in place. Close, lock and stay away from external doors and windows. Take annunciators, emergency supply kits and escape hoods; and move to your office’s assigned shelter in place location or the innermost part of the office away from external doors or windows. If you are not near your office, go to the office nearest to you and shelter with that office and then check in with your OEC. No one will be permitted to enter or exit the building until directed by USCP. Staff is advised to monitor the situation. Further information will be provided as it becomes available.