[JURIST] BBC television is reporting that UK police have made a "series of arrests" in the London bombings case after they identified the body of a bomber who died in the Tavistock Square bus blast. It is not clear whether the bus bomber was a suicide bomber or whether the bomb went off while it was being transported. Earlier Tuesday, police carried out a number of raids in West Yorkshire, but it is still unconfirmed where the arrests were made. A news conference has been scheduled at Scotland Yard for 5 PM London time (12 Noon ET).

11:39 AM ET – London's Sky News is reporting that all four suspected bombers died during the London terror attacks. The BBC is saying that, according to police, all four of the bombers were British-born.

11:51 AM ET – The BBC is reporting that British security sources have said that the three bombers killed in the tube bombings were likely suicide bombers, although the status of the bus bomber is still unclear.

12:14 PM ET – At a briefing [transcript] in London, police have said that Tuesday morning they searched the homes of 3 of the 4 bombers in West Yorkshire. All the bombers are now known to have came to London by train on the morning of July 7, where they were filmed at King's Cross subway station by closed-circuit CCTV cameras shortly before 8:30 AM London time. One arrest has been confirmed in West Yorkshire.

12:25 PM ET – Sky News now has more; see also this BBC News report.

2:05 PM ET – The BBC reports that the British-born bombers were British citizens of Pakistani origin.