Sky News is quoting police sources as saying that all four bombers were killed in the London attacks. A press conference is due at 5pm.
Sky News crime correspondent Martin Brunt said three bombers died in separate Tube attacks and one was killed in the No 30 bus blast.
It was still not clear if the man on the bus had been a suicide bomber. (Sky News)
Debka has a reputation as a conduit for Israeli disinformation, but so far on this occasion, its claims seem to be being borne out.