Security forces in Kenya have intensified their crackdown on refugees, with the government accusing some of supporting the Somali armed group Al Shabab. It comes amid the death of a Muslim cleric who was a vocal supporter of the group. Al Shabab is being blamed for several recent attacks, including one on a Church in Mombasa. The Kenyan government recently ordered all refugees living in urban areas to return to their camps in a bid to end attacks by armed groups carried out in retaliation for Kenya's intervention in neighbouring Somalia. Al Jazeera's Tania Page reports from Mombasa.