An ambulance transports people injured in a suicide bombing in the centre of Ramadi, western Anbar province, August 31, 2014. Thirty seven people were killed when a suicide bomber rammed an explosives-packed Humvee military vehicle into a construction site, used by the army and police, according to two police officers and a medical official. The blast killed 22 security personnel and 15 civilians, the medical and police sources said. The nine-story building under construction, used as a base by security personnel, was located in the centre of Ramadi. REUTERS/ Ali al-Mashhadani (IRAQ - Tags: CIVIL UNREST POLITICS)