The agreement was reached at the signing of a memorandum of understanding in Vienkham district on September 26 by the special working commissions of Vientiane, Xiengkhouang and Nghe An provinces.
Leaders of the three provinces showed strong determination to repatriate around 90 sets of remains of Vietnamese martyrs in Vientiane and Xieng Khouang during the 2013-2014 dry season.
They said they have encouraged local people to give a helping hand to the working groups.
Since 1984, the three commissions have gathered and repatriated more than 12,000 sets of remains.