A bus passenger says he may have seen one of those responsible for the bomb attacks in London.
Mr Jones said he saw a man in an agitated state on the bus
Richard Jones, from Binfield, near Bracknell, Berks, had got off a bus just before it was blown up in Tavistock Square on Thursday.
Mr Jones, 61, an IT consultant, has told BBC News he saw a man acting suspiciously on the bus.
He said the man was fiddling with something in his bag and seemed in an agitated state.
Mr Jones, who was forced to take the bus from Euston after Tube services were suspended, said: "He was standing next to me with a bag at his feet and he kept dipping into this bag and fiddling about with something.
"I was getting quite annoyed with this because it was a crowded bus.
"Everybody is standing face-to-face and this guy kept dipping into this bag."
Mr Jones, who said he got off the bus because it was in heavy traffic, has given a statement to police.
Police have yet been unable to establish whether a suicide bomber was responsible for the attack on the bus.
Police have said thirteen people were killed on the bus.