The Ho Chi Minh City Military Command said the remains were discovered on November 4 and 5 during an ongoing excavation at the park.
On November 5, the recovery team found 17 additional sets of remains and two collections of artefacts. More than 630 cubic metres of soil had been excavated and processed, with three excavators, one dump truck and two other trucks deployed to support the operation.
A day earlier, the team recovered 39 sets of remains, 17 of which were accompanied by artefacts. This brought the total number found over the two days to 56.
Since June 23, a total of 891 sets of remains have been recovered from the site as of November 5, according to the military command. Of these, 858 were recovered individually, while 33 were found at eight mass grave sites.
Authorities will continue excavating locations identified during preliminary surveys and expand the search area.
The search and recovery operation at Le Thi Rieng Park was launched on July 6 following the conclusion of Deputy Prime Minister Pham Thi Thanh Tra at a workshop verifying information about a mass grave of martyrs in the area.
Earlier, based on witness accounts and historical records, the Ho Chi Minh City Command estimated that hundreds of martyrs killed during the 1968 Tet Offensive and Uprising may have been buried in Do Thanh - Chi Hoa cemetery, now Le Thi Rieng Park.