Related Program: All Things Considered Attacks By Nigerian Muslim Group Stirs Fear By Ofeibea Quist-Arcton • Jan 29, 2012 Related Program: All Things Considered TweetShareGoogle+Email Listen Listening... / A radical Islamist group in northern Nigeria has claimed responsibility for a series of deadly bombing attacks last week that left more than 200 people dead. Boko Haram's campaign of violence has left minority Christians on edge in the city of Kano. TweetShareGoogle+EmailView the discussion thread.