Unknown number of victims in tunnel

Police chiefs admitted they do not know how many bodies are still in the wreckage of a Tube train following Thursday's terrorist attacks in London.

They confirmed that more than 50 people were killed in total in the blasts on three trains and one bus. But the instability of a tunnel between King's Cross and Russell Square Stations meant they were having difficulty at one of the bomb scenes.

Scotland Yard Commissioner Sir Ian Blair said: "We know that there are more than 50 fatalities. There is great difficulty in deciding or determining how many fatalities because two of the scenes are very difficult in terms of recovery.

"One is the bus because of the nature of the explosion and more acutely the Tube train at Russell Square continues to hold a number of bodies. We don't know how many are there."