The State Department has issued a worldwide warning of possible al-Qaeda attacks against US interests, citing the second anniversary of the September 11th attacks.
"We are seeing increasing indications that al-Qaida is preparing to strike US interests abroad," the State Department said in a statement. There were no plans to raise the nation's terrorism threat alert level.
In past months, al-Qaeda and connected organisations have carried out bombings in Riyadh, Saudi Arabia, Casablanca, Morocco, and Bali, Indonesia, the State Department said.
"We therefore assess that European or Eurasian locations could be venues for the next round of attacks, possibly to closely coincide with the" September 11th anniversary, the State Department said.
The latest caution updates a July 29th warning about possible hijackings of commercial aircraft by terrorists.
The national terrorist threat level remains at yellow, signifying an elevated risk of attacks. The five-level, colour-coded system was last raised to orange, or high risk, for 11 days in May.
AP