US sees credible, unconfirmed Sept. 11 threat
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President Barack Obama on Thursday ordered a redoubling of US counter-terrorism efforts in the face of a "credible but unconfirmed" threat ahead of the 10th anniversary of the Sept. 11, 2001 attacks.
US officials, speaking to Reuters on condition of anonymity, said the threat involved Washington D.C. and New York City, which were targeted in al-Qaeda attacks a decade ago this Sunday that killed nearly 3,000 people. (Reuters)