A British government review into Egypt's outlawed Muslim Brotherhood published Thursday has concluded that membership of or links to the political group should be considered a possible indicator of extremism. The long-delayed review into the organisation was first commissioned in April 2014 by Prime Minister David Cameron with a remit to examine whether the group put British national security at risk. "Parts of the Muslim Brotherhood have a highly ambiguous relationship with violent extremism. Both as an ideology and as a network it has been a rite of passage for some individuals and groups who have gone on to engage in violence and terrorism," Cameron said in a statement accompanying the report.