They filed an application before a Magisterial Court seeking transfer of the investigation to CBI and probe under Section 173 of the Code of Criminal Procedure (CrPC).
Under Section 173 of CrPC, police had the power to carry out further probe into a case even after filing a chargesheet and on discovery of further evidence they could file an additional chargesheet.
Dipesh (10) and Abhishek Vaghela (11), both cousins, were students of Asaram Bapu's gurukul (residential school) at Motera here.
They went missing from the gurukul on July 3, 2008 under mysterious circumstances. On July 5, 2008, their mutilated bodies were found on the banks of Sabarmati river near the ashram.
The incident triggered a widespread public outcry with allegations that the deaths were linked to black magic allegedly practised in the ashram.