Unless claimed by his family, the corpse of the culprit shall, upon the completion of the legal proceedings subsequent to the execution, be turned over to the institute of learning or scientific research first applying for it, for the purpose of study and investigation, provided that such institute shall take charge of the decent burial of the remains. Otherwise, the Director of Prisons shall order the burial of the body of the culprit at government expense, granting permission to be present thereat to the members of the family of the culprit and the friends of the latter. In no case shall the burial of the body of a person sentenced to death be held with pomp.