NEW : More than 180 women , kids freed from militants ' compound , official says . Comment: More 400 people killed in Nigerian violence , Red Cross official says . Under the sect 's strict form of sharia law , the group that was released was shielded from public view , Ojukwu said . Militants holed up at base of operations in Maiduguri , Nigeria .
NEW : More than 180 women , kids freed from militants ' compound , official says . Comment: More 400 people killed in Nigerian violence , Red Cross official says . Militants holed up at base of operations in Maiduguri , Nigeria .