The two accused involved in the serial killings of children in Noida's Nithari village are likely to undergo narco-analysis test in Gandhinagar on Sunday, police sources said.
Moninder Singh Pandher and his servant Surendra Koli are being subjected to various tests at Directorate of Forensic Sciences (DFS) since Friday when they were brought in Gandhinagar. They underwent polygraph and brain-mapping tests on Saturday.
DFS officials are tightlipped about the outcome of their investigation but have hinted the two were cooperating during the tests.
The duo underwent detailed medical examination on Saturday at the Gandhinagar Civil Hospital after they were taken out from the DFS campus stealthily from the prying eyes of mediapersons.
DFS sources said the medical tests were a prelude to conduct the narco-analysis or truth serum tests on the two. During the tests it was revealed that Surendra is diabetic.
Police sources said on the first day of the forensic tests the prime accused Pandher had revealed his high-profile connections with UP politicians and others who used to frequent his house in Noida, from where skeletons of children were recovered.