At least eight people have been killed and three others injured by bomb blasts in the Nigerian capita, Abuja, as the West African country celebrates 50 years of independence.
The explosions came an hour after the militant Movement for the Emancipation of the Niger Delta issued an email warning that it had planted several devices and telling people to evacuate the area.
Security forces had been trying to douse a fire in a car after the first explosion when a second blast occured.
A nearby parade marking the 50 years since the end of British rule continued without any interruption.
President Goodluck Jonathan, is from the Niger Delta area, but his accession to Nigeria’s top job has failed to ease tensions between rebels and the government.