“The U.S. Mission in Nigeria is issuing this emergency message to inform America citizens of potential threats against U.S. installations during the July 4 holiday week,” said a statement posted on the embassy’s website.
July 4 is American Independence Day Celebration.
Abuja was hit by fresh violence late on Tuesday, when a blast went off outside Banex Plaza, a popular shopping centre.
U.S citizens in Abuja remain barred from visiting places of worship as well as nearby commercial establishments and must return to their homes by midnight, according to the embassy statement.
The embassy “is working with the government of Nigeria to implement additional security measures,” throughout the July 4 holiday week, the statement added.
Last month, Washington designated three Boko Haram leaders as global terrorists, a move it said was aimed to help stem the violence in Nigeria.
Boko Haram, which has previously threatened to strike U.S interests, has claimed attacks that have killed more than 1,000 people since the middle of 2009.
