After investigations by Norwegian intelligence in cooperation with US and British intelligence , three men with residence in Norway were arrested on 8 July 2010 in what was described as part of the largest terrorist network uncovered since the September 11 attacks . The men were thought to be part of an Al-Qaeda cell in Norway with links to the network responsible for the 2009 New York City Subway and United Kingdom plot , and were charged with conspiracy to commit one or more acts of terrorism in Norway . The plots were thought to have been ordered by Saleh al-Somali , and to have had links to Adnan Gulshair el Shukrijumah . At least two of the suspects had regularly attended the Muslim Cultural Center in Sarpsborg , a radical mosque known for its militant views
September 11 attacks
September 11 attacks
2010 Norway terror plot