The CBI is investigating alleged inconsistencies in the statements of the families of the two young girls who were found hanging in a small village in Badaun district of Uttar Pradesh in May this year. br br The investigating agency - which was handed the case amid global outrage over the alleged gang-rape and murder of the two cousins, aged 14 and 16 years - has reportedly recovered the slippers of the older girl, being seen as crucial evidence in the investigation into their death.