The spiritual leader of Scotland's biggest mosque has praised an Islamist assassin amid fresh concerns about the threat of radicalism at the Muslim centre of worship. Habib ur Rehman, the imam of Glasgow Central Mosque, said extremist Mumtaz Qadri was a "true Muslim" and equated his actions with the French resistance against the Nazis during World War Two. He made his remarks last month as he protested the execution of Qadri for the 2011 murder of Salman Taseer, the governor of Punjab who had championed the rights of Christians being persecuted under blasphemy laws.