Robert Webb, whose 29-year-old sister Laura died in the Edgware Road bombing, said: "The trial... raises again the awful question of whether the bombings could have been prevented".
Islamist militants carried out bombings in 1999 in Tashkent.
The admission came shortly after the only three men to be charged in connection with the suicide bombings were acquitted yesterday.
The US and Cuba will also discuss the case of William Morales, a Puerto Rican nationalist wanted in connection with bombings in New York in the 1970s.
A vigilante leader in Borno, Danlami Ajaokuta, whose civilian fighters have been working with the military in the region to fight Boko Haram, said security forces had ordered the closure of all businesses in the city given the apparently coordinated nature of the bombings and the fear there could be more.
However, there are fears that even if Boko Haram loses territory, it could resort to its old hit-and-run tactics of gun attacks and bombings in major towns.
In the Wikipedia entry on the shooting, a government internet connection was used to write: "There has been some public backlash against Menezes, with British tabloid newspaper in particular protesting that he has received more publicity than any of the 52 people who died in the bombings.
The Patna bombings targeted campaign rallies by Narendra Modi, leader of the Hindu nationalist Bharatiya Janata party (BJP), which went on to win a landslide victory in elections this May.
Related: South Africa's ageing white mercenaries who helped turn tide on Boko Haram In the capital Abuja on Monday, Mohammed Salihu, a supporter who fled his north-eastern home-state of Borno to escape Boko Haram's bombings last year, had one thing on his mind.
He died instantly on 22 July 2005; it was a fortnight after suicide bombings in London had killed 52 people.
Warsi was increasingly distressed by the prime minister's failure to sufficiently condemn the Israeli bombings of Hamas-controlled Gaza.
