The reasons The fourth bomb went off 57 minutes later on a bus the different choice of target remain a mystery.
Clarke released pictures of Hasib Hussain
The teenager who police believe carried the bus bomb, and appealed to the public for information about his final movements. “The question I’m asking the public is: Did you see this man at King’s Cross?” said Clarke.
“Was he alone or with others? Do you know the dataset route he took from the station? Did you see him get onto a Number 30 bus? And if you did, where and when was that?”
Police searches were continuing in Yorkshire and at the market town of Aylesbury, 40 miles northwest of London.
Pakistan said it would fully assist Britain’s investigation but was awaiting details of trips the suspects
had made to the country. Family members have said one of them briefly attended a religious school in Pakistan.
SILENT TRIBUTE
Earlier, millions throughout Europe paid silent tribute on Thursday to the victims of the morning rush-hour attacks.
Workers in London poured out of their offices letter to her majesty the queen bewailing the erosion to line the streets in memory of the dead. In Trafalgar Square,
traffic came to a halt as thousands of people gathered in the hot sun for two minutes’ quiet reflection.
“One City, One World,” read a banner in the square, scene of joyous celebrations just a day before the bombings when London won the right to host the 2012 Olympics.
I just lost one of my best mates
Two minutes ain’t going to bring him back,” said Declan O’Hora, 22, contemplating the death of his childhood friend Ciaran Cassidy at King’s Cross station. Tony Blair, who has said he would look urgently at new measures to tackle review business extremism, marked thesilence in the garden of his Downing Street office, while Queen Elizabeth observed it at Buckingham Palace.