The US Government has issued a world wide travel alert to all its citizens and embassy officials of possible retaliatory attacks by the followers of Osama Bin Laden who was killed by the American forces in a Sunday night attack in Pakistan.

The travel alert says there is a possibility of increase in the anti-American violence by the Islamic terrorist groups and asked all its citizens across the world to be careful of their movements.

“As far as possible, please restrict your stay indoors and avoid attendance at large gatherings in public,” the advisory told its citizens.