<sod >It was not immediately clear who was behind the attack, though jihadists have attacked hotels before in neighboring Mali, including a devastating attack on the Radisson Blu hotel in November that left 20 people dead.< eod>< sod > It is not immediately clear who is behind the attack, though jihadist have attacked hotels before in neighbouring Mali, including an attack on the Radisson Blu hotel in November killing 25 people.< eod>