"There is a high threat of terrorism in Bangladesh," the FCO said in its website yesterday revising its travel advice to ensure that British travellers are well prepared before leaving for Bangladesh.

It said that attacks using explosive devices continue to take place throughout the country, including the Dhaka, Chittagong and Sylhet regions. Recently the terrorists have intensified the scale and frequency of their attacks against domestic targets, the FCO further said, apprehending fresh attacks.

"Some attacks have been carried out against specific targets. The attackers themselves have been prepared to die in such incidents. But attacks can be indiscriminate and have been executed in public places, such as markets, shopping malls, cinemas, shrines and at cultural events and political gatherings. Local journalists and local non-governmental organisations (NGOs) have also been targeted. There is a risk that you might get caught up in such attacks."

The FCO also asked the citizens to avoid demonstrations and large gatherings including "hartals".

Referring to the recent attacks, the travel advice said in late November and early December, three bomb explosions at judicial and local government facilities in Chittagong and Gazipur are reported to have caused at least 13 fatalities and injured up to 100.