MANGALURU: The Special Investigation Team (SIT), which is probing the mass grave case, will begin the final phase of excavation at the 13th burial site on Wednesday.
The developments are being closely monitored, as no significant evidence has been recovered in the past 13 days of excavation in the temple town of Dharmasthala.
According to sources, if nothing is found during today's operation, the excavation work is likely to be halted.
An unidentified complainant had claimed that he had buried hundreds of bodies of women and girls, who were allegedly raped and murdered, across 13 sites.
The SIT had marked all the locations and even excavated certain additional spots suggested by the complainant.
Sources said the authorities are likely to file a petition before the court seeking permission to subject the complainant to brain mapping or a narco-analysis test to determine whether he is telling the truth.
No evidence was found at the 13th burial site after an extensive search by the SIT in connection with the alleged mass grave case, at the end of excavation work on Tuesday in the temple town of Dharmasthala.
The SIT conducted the excavation using a drone-mounted Ground Penetrating Radar (GPR).
After marking the burial site, the digging was carried out with two earthmovers until late in the evening, despite the rain.