Questions raised by the attacks and arrests
KAREN McVEIGH
Key points
. Police investigating connection between 7/7 and 7/21 bombings
. Experts believe 7/21 attempted bombings co-ordinated by a 'mastermind'
. Reports claim as many as 300 potential suicide bombers could be in UK
Key quote
http://news.scotsman.com/topics.cfm?tid=1312&id=1710582005
Questions raised by the attacks and arrests
KAREN McVEIGH
Key points
Police investigating connection between 7/7 and 7/21 bombings
Experts believe 7/21 attempted bombings co-ordinated by
a 'mastermind'
Reports claim as many as 300