British police today questioning four suspects held over failed bomb attacks on London's transport system as Italian investigators launched raids linked to the arrest of one of the suspected bombers.
Police believe they have captured all four men they were seeking over the July 21 botched bombings on three underground trains and a bus, which came exactly two weeks after four bombers killed themselves and 52 people in similar attacks.
After the culmination yesterday of a dramatic international manhunt for suspected Islamist militants, three of the men are in custody in Britain and a fourth was arrested in Rome.
The man arrested in Italy, named by authorities there as Osman Hussain, faces an extradition hearing later on Saturday, a judiciary source said.
London police also arrested another suspect they believe to be significant on yesterday.
But police have warned Britain, still coming to terms with news that four British Muslims carried out the deadly July 7 attacks, could face more danger.
They have stressed their investigation is far from over as they try to track down anyone who helped the bombers.
Forensic specialists were examining the two homes police raided in west London for clues.
In Italy, police carried out at least 15 searches stemming from the arrest in Rome of Hussain, wanted over the attempted bombing of a train at Shepherd's Bush in west London.
Interior Minister Giuseppe Pisanu said Hussain had evaded police searches with the help of contacts among Italy's Ethiopian and Eritrean immigrant communities.
"From the investigations, it has been possible to identify a dense network of individuals belonging to the Eritrean and Ethiopian communities in Italy, believed to have helped him cover his tracks," Pisanu told the lower house of parliament.