From the clue of a pen engraved with "Tien Quy" found at a mass grave in Minh Duc commune, Dong Nai is appealing for witnesses, comrades, and relatives to help identify the fallen soldiers.

Following the discovery of a mass grave containing 4 martyrs' remains, a search and repatriation team uncovered numerous artifacts, including a ballpoint pen engraved with "Tien Quy" and an image of two doves.