Those 20 bodies are those found by the boys. It looks like they were in a burial vault.
No other bodies have been found. Excavation is needed to find the other bodies (if, indeed, they were buried at that site!).

The ground-penetrating radar found a 12 x 4 meter site with "denser soil," but just what this is can only be determined by excavation. Also a culvert-like reflection, again its meaning not known.

One family has applied for exhumation. There is no indication as to when this or other excavation might take place.