A policeman walks past a poster that concerned relatives have placed near the blast scenes, of family members still missing after four bombs exploded on three underground carriages and a bus in London. A policeman walks past a poster, July 8, 2005, that concerned relatives have placed near the blast scenes, of family members still missing after four bombs exploded on three underground carriages and a bus in London yesterday. Police have stated that over 50 people have been killed and over 700 injured in the blasts. REUTERS/Mike Finn-Kelcey