US: credible 9/11 anniversary threatTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoMartin Brandt09/09/2011September 9, 2011US officials said they had received a credible threat of car bomb attacks ahead of the tenth anniversary of the September 11 attacks. Officials are searching for three suspects and have stepped up security in New York and Washington.https://p.dw.com/p/RkizAdvertisement