Kolkata/IBNS: Sanjoy Roy, the accused of raping and murdering a 31-year-old female junior doctor at Kolkata's RG Kar Medical College and Hospital, was not a hospital employee, but had frequent access to all buildings on the campus.

Roy worked as a civic volunteer with the Kolkata Police. Civic volunteers are contractual staff recruited to assist cops in various kinds of work, including traffic management and disaster response.

With a salary of around Rs. 12,000 a month, these volunteers do not enjoy the amenities available to regular police personnel.

According to reports, Roy joined Kolkata Police's disaster management group as a volunteer in 2019 and was later shifted to the police welfare cell.

He then moved to the police outpost at RG Kar Medical College and Hospital and had access to all departments.

According to reports, Roy was part of a racket in the hospital that charged patients' relatives for ensuring admission.

He would also charge patients' relatives for finding a bed at nearby nursing homes if they did not get a bed at the government hospital.

Despite not being a regular cop, Roy used his contacts to stay at the police barracks at times. He roamed around wearing a t-shirt with KP (Kolkata Police) written on it.

His bike too had a KP tag. He introduced himself as a Kolkata Police personnel and many other civic volunteers, reports say, thought he was actually a cop.

According to reports in local media, Roy admitted to the crime soon after police started questioning him. The reports say he showed no remorse and said nonchalantly, "Hang me if you want". The mobile phone, seized from him, was full of pornographic material.

The police arrested him after a CCTV camera on the hospital premises showed him entering the emergency building around 4 am on Friday.

The doctor's body was found in the same building hours later. Another big clue was finding a Bluetooth headset found next to the victim's body.

As per the CCTV footage, the headset was seen around Roy's neck when he entered the building but was missing when he exited. The headset next to the victim's body was also paired with his phone.

According to media reports citing sources, Roy went home after committing the heinous crime and washed his clothes to destroy evidence. Police have, however, found bloodstains on his shoes. The accused has been remanded in police custody till Aug 23.

Meanwhile, the 31-year-old medical student watched Neeraj Chopra's silver medal-winning throw at the Paris Olympics, dined with batchmates, and rang up parents before entering the seminar room, where she was allegedly raped and murdered by civic volunteer Sanjoy Roy, who is now under arrest.

The doctors had reportedly ordered out last Thursday night and they ate together watching the Olympics.

While others joined the night duty, the trainee doctor headed to the seminar room to study.

Some reports have claimed she had fallen asleep at one point inside the seminar hall.