On Friday, March 15 a case of robbing was lodged against them for looting a vegetable seller before brutally assaulting the girl.
The six accused, bus driver Ram Singh, his brother Mukesh, Vinay Sharma, Pawan Gupta, Akshay Singh and a juvenile, had allegedly robbed Ramadhar Singh, a vegetable seller, of his day's earnings after luring him into the bus.
According to the police, Ramadhar, a resident of Sangam Vihar in South Delhi, was returning home from the RK Puram market when he was lured into the bus and robbed by the accused, who took away Rs 700 and a mobile phone from him.
Police had later on recovered the looted amount and the mobile phone from the accused.
During a closed-door proceeding, the police filed its charge sheet against all the accused before Metropolitan Magistrate Akash Jain, who also took cognisance of the final report, court sources said.
"Cognisance taken. To come for scrutiny of documents and consideration on March 3," the magistrate said.
According to sources, the charge sheet was filed for the offences punishable under various sections, including 395 (dacoity), 120-B (criminal conspiracy) of the IPC.
The main accused Ram Singh committed suicide in his cell in Tihar Jail on Monday morning.
The proceedings against Ram Singh would be abated after his death.