KAMPALA -- The US has issued an emergency terror attack warning to its nationals in Uganda asking them to exercise caution.

The US embassy in a statement posted on its website on Wednesday said it has received information of possible terrorist threats to locations where Westerners, including US citizens, congregate in Kampala, and that an attack may take place soon.

"Out of an abundance of caution, the US Mission has cancelled some non-essential events scheduled at local hotels in the coming days. US citizens staying or visiting hotels should expect increased security sweeps and delays when entering or exiting hotel areas," the statement said.

"The US Embassy takes this opportunity to remind all US citizens to review your personal security plans; remain aware of your surroundings, including local events; and take appropriate steps to enhance your personal security such as varying your daily routines and avoiding crowded locations," the statement added.

Somali militant group Al-Shabaab has issued several warnings to Uganda that they will attack if the country does not withdraw its peacekeeping troops from the war torn Somalia.

Uganda was hit by the Al-Shabaab militants in July 2010 when suicide bombers killed over 80 people in a twin bomb blast in the capital Kampala.

The perpetrators who among others include foreign nationals are currently facing trial in Kampala.