Nigeria : More than 180 women , kids freed from militants ' compound , official says . More than 2,500 flee fighting between rebels , government in northern Nigeria . More civilian people killed in Nigerian violence , Red Cross official says . Troops holed up at base of operations in Maiduguri , Nigeria .
NEW : More than 180 women , kids freed from militants ' compound , official says . More than 2,500 flee fighting between militants , government in northern Nigeria . More 400 people killed in Nigerian violence , Red Cross official says . Militants holed up at base of operations in Maiduguri , Nigeria .