Rescue workers carry the remains of a person in a body bag after an explosion at a shopping mall Wednesday in Abuja, Nigeria. Police said 21 people were killed in the blast, which was blamed on Islamic extremists. The blast came as Nigerians were preparing to watch their country's Super Eagles play Argentina at the World Cup in Brazil. Many shops at the mall have TV screens, but it was unclear if the explosion was timed to coincide with the match, which started an hour later. Witnesses said body parts were scattered around the exit to Emab Plaza, in Abuja's upscale Wuse 2 suburb.