‘Asipeli Palaki, 53, was receiving treatment for kidney problems at a hospital in Suva, Fiji.
Radio Tonga reports he died on Sunday, January 15.
A spokesman for the Ministry says they are arranging a special program for the arrival of his body at the airport.
The funeral cortege will be transferred to the Vaiola Mortuary and a prayer service will be conducted as is customary to such occasions.
Asipeli is survived by his wife Lotukalafi Palaki and two children.