Nigerian Muslim sect blamed for policeman killing

MAIDUGURI, Nigeria 
Authorities in northern Nigeria say members of a radical Muslim sect blamed for a string of recent attacks have killed a policeman. 

State police commissioner Mohammed Abubakar said that the policeman was killed Monday morning while returning home after a night patrol in Maiduguri.  Two gunmen on a motorcycle taxi followed the officer home and shot him. 

Officials are now advising police officers not to wear their uniforms outside of duty. 

The radical group known as Boko Haram was thought to be vanquished in 2009 after its leader was arrested and died in police custody. 

A year later, Maiduguri and surrounding villages again live in fear of the group, whose members also have attacked churches and engineered a massive prison break.