More skeletal remains were found on Tuesday from the drain behind the home of businessman Moninder Singh Pandher, accused of killing and sexually assaulting at least 20 children along with his domestic help Surendra Koli.
Brain mapping, narco analysis and lie detector tests on the two accused were under way in the Gujarat capital Gandhinagar.
Police stumbled on the grisly find when they resumed cleaning of the drain behind Pandher's D-5 bungalow in Sector 31, Noida, a satellite town of the Indian capital. The house had been sealed on Monday.
"Yes, we have found a few more bones from the drain," Senior Superintendent of Police RKS Rathore said.
He said investigations were on and they were trying to put together "all possible wires" of the case.
On Dec 29 and 30, police had dug out skeletal remains, slippers and stained clothes of at least 20 children from the drain. Most of them were from Nithari village, barely 100 metres from the bungalow.
Over the last two years, 38 children have gone missing from Nithari, home to over 25,000 people, mostly migrants from West Bengal who earn their livelihood by pulling rickshaws, working as daily labourers or as domestic help in the upscale residential colonies nearby.
Their complaints to the police about their missing children were unheard until the bones were found.
In other developments in the case that has shocked the country with the enormity of the crimes and the sheer numbers, one more police official - Shivraj Singh Yadav, an inspector with the local intelligence unit - was suspended Tuesday for dereliction of duty.
Earlier, Noida superintendent of police Soumetra Yadav and Ghaziabad senior superintendent of police Piyush Mordia were suspended. Mordia was in charge of Noida when most of the missing children cases were reported from Nithari.
In Gandhinagar, Moninder Singh was undergoing the narco-analysis test on Tuesday. He had on Monday evening complained of some health complications for the second day in a row and was admitted to the Gandhinagar civil hospital for a check up. Doctors later declared him fit.