The United States warned its citizens in South Sudan on Friday that "recent information indicates Westerners may be targeted by terrorists".

The US embassy in Juba said the terrorists may conduct attacks with little or no warning, targeting hotels, restaurants, shopping areas, and other areas where large crowds gather and westerners frequent.

"Recent information suggests terrorists continue to actively plot attacks against the U.S. Embassy and U.S. government personnel," the statement said.

The embassy has urged its citizens to always have their travel documents up to date and review their personal security plans.

This warning comes as South Sudan’s government and opposition groups struggle to implement the 2018 peace agreement that has largely stopped fighting in the country.

But the peace deal is already behind schedule and there are worries that the rival parties may not meet a February 22 deadline to form a unity government.

The United States is among the countries pressuring South Sudan's leaders to form a coalition government by February 22.