Bomb hits Nigeria U.N. office

Firefighters and rescue workers after a large explosion struck the United Nations' main office in Nigeria's capital Abuja, Aug. 26, 2011, heavily damaging one wing of the building and killing several people.

Rescue workers evacuate a wounded man from the UN building of the Nigerian capital Abuja which was rocked by a bomb on August 26, 2011. Some witnesses reported that the bomb exploded after a suspect rammed a car through the front gate. Parts of the first two floors of the building were blown out and rescue workers scrambled to rescue those left inside.

Rescue workers evacuate on August 26, 2011 a wounded man from the UN building of the Nigerian capital Abuja which was rocked by a bomb leaving others trapped and causing heavy damage.

A injured woman is carried from a United Nation's office after a car blew up in Abuja, Nigeria, Friday, Aug. 26, 2011. A car laden with explosives rammed through two gates and blew up at the United Nations' offices in Nigeria's capital Friday, killing at least seven people and shattering part of the concrete structure.

An injured man being stretchered down a ladder by firefighters after a large explosion struck the United Nations' main office in Nigeria's capital Abuja, Aug. 26, 2011.

Firefighters and rescue workers after a large explosion struck the United Nations' main office in Nigeria's capital Abuja, Aug. 26, 2011.

eople outside the the National Hospital in Abuja, Nigeria — AP Photo/Luke Skylolo

Crowds of people outside the National Hospital in Abuja, Nigeria as an ambulances arrive on Aug. 26, 2011, following a large explosion which struck the United Nations' main office in Nigeria's capital.

Crowds of people outside the the National Hospital in Abuja, Nigeria as ambulances arrive, Aug. 26, 2011, following a large explosion which struck the United Nations' main office in Nigeria's capital.

An ambulance, firefighters and rescue workers after a large explosion struck the United Nations' main office in Nigeria's capital Abuja Friday Aug. 26, 2011.

Debris after a large explosion struck the United Nations' main office in Nigeria's capital Abuja Friday Aug. 26, 2011.

Ambulances and rescue workers after a large explosion struck the United Nations' main office, background, in Nigeria's capital Abuja Friday Aug. 26, 2011.

Police and rescue workers after a large explosion struck the United Nations' main office in Nigeria's capital Abuja Friday Aug. 26, 2011.