The US embassy in Islamabad on Thursday banned its staff from restaurants and markets in the Pakistani capital for several days either side of the anniversary of Osama bin Laden’s death.
The Al-Qaeda kingpin was killed in a US special forces raid in the Pakistani garrison town of Abbottabad on May 2 last year and there are fears militants may mark the one-year anniversary with an attack.
The 9/11 mastermind’s three widows, their eight children and a grandchild are still being held in Islamabad after being detained in the Abbottabad raid.
They were originally supposed to be deported last week but the move was delayed because legal formalities were not complete.
A US official speaking on condition of anonymity said the warning was issued in response to information about a specific threat.
But Pakistan’s deputy interior minister Imtiaz Safdar Warraich told AFP he had no information about a threat.