Red Cross officials say they are taking another look at policy on designated donations.
Red Cross officials are hoping to have access to the bodies to try to get a more exact picture of what happened.
Red Cross officials have been refused entry to the two camps.
Red Cross officials at the scene said 14 of the dead were children and 25 were women.
Red Cross officials said the shelter would remain open until the last refugee had returned home or found another place to live.
Red Cross officials refused to comment on the contents of the letter.
Red Cross officials opened 87 shelters across the state which were able to hold about 14,000 evacuees.
Red Cross officials said no amount of technology would have helped avoid the problems.
Red Cross officials were scrambling to find shelter for the more than 100 people left homeless in the last 24 hours.
Red Cross officials said they counted 30 bodies, most of whom were civilians.
