British police say they are hunting for the suspected ringleaders and anyone else who provided support to the July terrorist bombings in London.
With the bombers either dead or in jail, a police spokeswoman said Sunday investigators are shifting their focus to find the bomb builders along with those who financed the attacks and gave shelter to the suspects.
British authorities made seven more arrests on Sunday, this time in the southern resort town of Brighton. No details of the arrests have been released. At least 18 people are now in custody in Britain.
Four suicide bombers killed themselves and 52 others July seventh on three London subway trains and one bus. Four other suspects allegedly tried but failed to carry out a similar attack on July 21. They are all in custody, three in Britain, and one in Italy.
Some information for this report provided by AFP and Reuters.