Nigerian authorities have arrested one suspect, and killed another, after a bomb claimed 21 lives in a shopping centre in the capital Abuja, a city gripped by fear of attacks by Boko Haram Islamists.
Wednesday's blast shook the Emab Plaza at 4:00 pm (1500 GMT), the National Emergency
Management Agency (NEMA) said, as shoppers were buying groceries ahead of the country's World Cup match against Argentina, which kicked-off an hour later.
"The casualty figure for now is 21 persons dead, 17 injured," national police spokesman Frank Mba said, adding that a suspect had been arrested.
Later the National Information Centre said a second suspect had been shot dead by troops as he tried to escape on a motorbike.
Senior government spokesman Mike Omeri confirmed that the blast was the result of "a bomb attack".
Rescue workers carry the remains of a person in a body bag, after a explosion at a shopping mall in Abuja, Nigeria.(AP Photo)
Rescue teams were deployed to the scene and evacuated the victims from the area, NEMA spokesman Manzo Ezekiel told AFP.
"The explosion struck at peak business time," he said, adding that the area was busy at the time of the blast and that 40 cars had been destroyed.
The blast, at the entrance to the mall, was powerful enough to blow out windows in buildings on the opposite side of the street, an AFP correspondent on the scene in the immediate aftermath said.
The area, sandwiched between two other shopping centres and one of the busiest in central Abuja, was littered with the burnt out wreckages of cars and soaked in pools of congealed blood.
Rescue workers could be seen picking through what appeared to be the scorched body parts of victims.
An employee of the nearby Newcastle Hotel in the Wuse II area of the city, who did not want to be named, said she clearly heard the explosion.
Soldiers and police cordoned off the scene of the blast and firefighters were at the location, as thick smoke billowed into the sky, an AFP reporter said.
A soldier close to the scene but who demanded anonymity told reporters that two suspects who tried to flee the scene were caught.
One of them who was shot by soldiers as he was fleeing later died from his injuries.
'It is terrible'
Oreoluwa Adeoye who sells phone accessories at the nearby plaza said: I saw many dead bodies. Some taxi drivers parked at the spot of the explosion waiting for passengers. Some drivers perished there with their passengers."
"It is terrible. There are a lot of human bodies shattered... They are in pieces. The security agencies have been picking human bodies (parts) in nylon bags," said Shuaibu Adamu Baba, an education consultant who said he lost his driver in the blast.
"I lost a driver that has three wives and eight children," he lamented.
Boko Haram which sparked worldwide outrage by kidnapping more than 200 schoolgirls in April, has attacked Nigeria's capital twice in the last 10 weeks.
A car bombing killed 75 people at the Nyanya bus terminal on the outskirts of the city on April 14 while a copycat bombing at the same spot on May 1 left 19 people dead.
The security services put the capital under lockdown following the second explosion as Abuja prepared to host a World Economic Forum summit on Africa in early May.
While the forum went off without a hitch, a Boko Haram attack in the heart of the capital less than two months on will raise fresh doubts about Nigeria's capacity to contain the group's worsening insurgency.
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