On Friday, February 29, at approximately 7:00 p.m., the United States Park Police were notified of a potential bomb threat against the Lincoln Memorial. Officers cleared the memorial site and established a safe perimeter. Lincoln Memorial Circle and adjacent roads to include Arlington Memorial Bridge were closed. Working in conjunction with other law enforcement agencies the memorial area was checked by K9 officers. The area was deemed safe at approximately 10:00 p.m. and reopened to the public.