Requirements:

Transport of Human Remains

1. Certified copy of Death certificate
2. Burial/Transit Permit
3. Passport of decedent
4. Embalmer's affidavit
5. Letter of non-contagious disease
6. Casket - sealer-type metal
7. Zinc-lined wood shipping box

Consulates: http://www.state.gov/s/cpr/rls/fco/164195.htm#chad

Embassy: http://www.embassy.org/embassies/td.html