NEW : Congo rebels blame Rwandan Hutus for attack , report missing . Internally , Congolese flee as they attack government troops . so we 're going to have to move quickly to get that help to them because a lot of them are already in a weakened state . '' Torrential rain makes refugee movement difficult . U.N. refugee agency : Some 375,000 have been displaced from Rwanda in past year .
NEW : Congo rebels blame Rwandan Hutus for attack , report missing . Internally , Congolese flee as they attack government troops . Torrential rain makes refugee movement difficult . U.N. refugee agency : Some 375,000 have been displaced from Rwanda in past year .