According to media reports, Haryana police has also sought the transfer of the case to CBI.
"We have registered a case for abetment to suicide after complaint by Ashu Girhotra. We have requested for the case to be transferred to CBI," said Panchkula Superintendent of Police Maneesh Chaudhary.
The 3rd FIR against Rathore came four days after a complain was lodged against him by Ruchika's brother Ashu Girhotra.
Commenting to the FIR filed against the former DGP, Ruchika's lawyer, Pankaj Bhardwaj said that it would be 'major blow to Rathore'.
Rathore was also stripped off his police medals on Monday, Jan 4 by the Center.
14-year-old Ruchika Girhotra, a student at Sacred Heart school was molested by SPS Rathore in 1990 and was forced to commit suicide in 1993.