Unnao has hit headlines several times in the last three years for reporting heinous crimes against women.
Heavy deployment of police force has been made at the hospital to ensure the safety and security of the girl.
Two of the poisoned girls died on way to hospital while the third one is battling for life in a Kanpur hospital.
The high court on November 6 issued notice to the CBI on Sengar's appeal against his conviction and jail term and had also asked the agency to respond to his application.
The three women officers are the then Unnao district magistrate Aditi Singh and two SPs, Neha Pandey and Pushpanjali Singh.
The three officers indicted by the CBI are the then Unnao district magistrate Aditi Singh and two SPs – Neha Pandey and Pushpanjali Singh.
Atul Singh Sengar, the brother of expelled BJP MLA Kuldeep Singh Sengar, had approached the High Court seeking eight-week parole for multiple health issues.
Unnao case: HC directs jail authorities to give treatment for oral cancer to Kuldeep Sengar's brother
Justice Vibhu Bakhru was informed that the convict, Atul Singh Sengar, has been diagnosed with oral cancer and requires extensive treatment.
Convict Atul Singh Sengar, who is serving jail term, sought eight weeks parole on the ground that he has multiple health issues and has to undergo surgery in Kanpur.
The rape survivor and the advocate were injured on Sunday when a truck hit their car in Rae Bareli.
A CBI team had on Saturday gone to jail in Sitapur, where Sengar has been lodged for over a year, to check the visitors' records and who he has been receiving at the prison.
Priyanka Gandhi had given a call for a state-wide three-day signature campaign starting Saturday as part of a Congress strategy to build pressure to ensure justice to the rape survivor.
Devender was among the three persons, including truck driver Ashish Kumar Pal and cleaner Mohan Shrivas, who was arrested for the accident involving the Unnao rape survivor.
The arrests, made over Monday and Tuesday, included three persons arrested for vandalism, attacks against buses and shops and blocking the roads.
Fourth FIR lodged in Unnao rape case: MLA Kuldeep Singh Sengar's brother to be taken in police custody for interrogation
The Central Bureau of Investigation (CBI) has registered fourth case in connection with the Unnao rape case involving Bharatiya Janata Party (BJP) MLA Kuldeep Singh Sengar.