A PIL was filed in the Supreme Court on Wednesday seeking a CBI probe or SIT investigation under a sitting or former Supreme Court or High Court judge in the gruesome gang-rape and murder of a 19-year-old Dalit woman in Uttar Pradesh's Hathras district.

The PIL has been filed by social activist Satyama Dubey and advocates Vishal Thakre and Rudra Pratap Yadav. The petitioners urged the apex court to pass appropriate order for a fair investigation - either by the CBI or the SIT under a sitting or retired judge of Supreme Court or High Court - and transfer the case to Delhi, as Uttar Pradesh authorities had failed to take certain actions against the accused.