Used to work security in a well known south Dublin shopping centre, we had a bomb scare there back in 2006 . Mary macaleese was opening something or other there.. It wasn't a voice on the phone going "zees ees mahommed" ,it was garda special branch - they had been rang with a codeword. A guy I worked with (eastern European,ex military police ),reckoned there were 4 cells of al quaeda active in Dublin back then.(He had contacts in Interpol etc.)...I'd say it's a lot higher now.