A woman terror suspect was arrested in London Thursday over an alleged online attack plot on an Italian synagogue. The 40-year-old was detained in a pre-dawn swoop by Scotland Yard\'s counter-terror team, which is liaising with authorities in Milan, a force spokesman said. The arrest is understood to be linked with Italian police arresting a 20-year-old Moroccan who is suspected of having a Facebook page dedicated to training in the use of weapons and showing maps around Milan\'s main synagogue.