NEW : At least 20 people are taken to a local hospital . UP A cargo train derailed and crashed into homes Sunday in a sprawling Kenyan slum , the Red Cross said . : Rescue operations are under way to free the residents . Kibera is one of Kenya 's largest cities . A railway passes through the neighborhood .
NEW : At least 20 people are taken to a local hospital . UP : Rescue operations are under way to free the residents . Kibera is one of Kenya 's largest cities . A railway passes through the neighborhood .