"The resence of al-Qaeda, Taliban elements, indigenous sectarian groups, and other terror organisations, many of which are on the US government's list of foreign terror organisations, poses a potential danger to American citizens in the region," it said.
The declaration by US came following continued information that of possible terrorist strikes on South and Central Asia region, including against US government facilities, American citizens, or interests, the State Department.
A travel alert has been issued by the the State Department stating likely terrorist attacks by vehicle-born explosives, improvised explosive devices, assassinations, carjacking, rocket attacks, assaults or kidnappings.
The travel also noted the willingness and capability of terrorists and their sympathisers to target places where Americans or Westerners are known to congregate or visit.
Pointing the large number of Americans falling victims to the attacks, the travel alert said that US has witnessed several terror attempts in 2009 by militants using multiple operatives using portable weaponry such as guns, grenades, RPGs and suicide vests or car bombs in Pakistan,