The girl was rescued from his house on Saturday morning, Lalauli police station SHO Sandeep Kumar Tiwari said.
However, her parents noticed that she was unwell and suffering from stomach pain.
However, the officer deliberately overlooked crucial evidence and bestowed all his efforts to save the culprits.
The Protection of Children from Sexual Offences (POCSO) court number-2 also slapped a fine of Rs 20,000 on the convict, Jankilal Lodha, for raping the girl in October 2018
The 23-year-old man had lured the minor to a secluded spot by offering her Rs 10.
The court directed that the Lok Nayak Jai Prakash Narayan Hospital (LNJP) medical board to give its report on January 18 as to whether the abortion was advisable.
The incident occurred on Saturday evening when a local festival was going on in their village under Rampurhat police station area bordering Jharkhand.
The development comes about five months after skeletal remains of the victim packed in a bag were found near her house on July 23.
Sahibganj Superintendent of Police Anuranjan Kispotta said a medical examination of the girl was conducted and it confirmed gang rape.
The district had hogged spotlight last month following the death of a 19-year-old Dalit woman, a fortnight after she was allegedly raped by four men in a village.
Thereafter, both Gurpreet and Surjit allegedly killed her and then burnt her body. The half-burnt body of the girl was found from their house.
An FIR was lodged in the case, following which the 32 -year-old was arrested and sent to jail.
The in-charge of Revathi police station, Pravin Singh, said the girl had come to her maternal grandmother's village, where she was allegedly raped by her maternal uncle in the morning.
She added that all inmates of Maruthi Home have now been shifted to State Home Campus at Yousufguda.
The girl was raped for months at Maruthi Home, an NGO for child care at Ameenpur, and later assaulted by her uncle.