As news of the brutality on the girl came out, angry protesters massed at the hospital where she was warded since Wednesday morning after her family rescued her from the house of her abductor in Gandhi Nagar in east Delhi.
The traumatized girl was Friday evening shifted to the All India Institute of Medical Sciences (AIIMS).
The alleged rapist, Manoj, a labourer, lived in the same building as the victim's family. Police said he was on the run.
The horrific rape -- and the street protests -- brought back memories of the Dec 16 gangrape of a young woman who later died in Singapore.
A doctor said he and his colleagues had never seen such a brutal rape. They said a bottle and pieces of candle were found thrust into the private parts of the girl.
"We found a 200 ml bottle and two or three pieces of candle inserted into her private parts. This is the first time I have seen such barbarism," said R.K. Bansal, medical superintendent, Swami Dayanand Hospital.
"There were injuries on her lips, cheeks, arms and anus area, and bruise marks on her neck, suggesting that attempts were made to strangle her. The blood pressure was way below normal," the doctor said.
The girl also had fever when she was admitted -- and in severe trauma. Doctors at AIIMS refused to give more details.
Anger against Delhi Police mounted after the girl's father, a mason, said they failed to even register his complaint when his daughter went missing.
"We went to police to register a FIR (First Information Report) but they refused. They never tried to find her, and instead drove us away," said the distraught man.
He said when the family finally found the girl Wednesday morning after hearing her screams, policemen offered the family Rs.2,000 to keep mum.
"The police told us not to highlight the issue in the media and gave us Rs.2,000 as 'kharcha-pani'," said the father, adding the police told them to "thank god that his daughter was alive".
Angry protesters -- including neighbours and activists of Aam Aadmi Party (AAP) -- soon gathered near Swami Dayanand Hospital in east Delhi.
They raised slogans against Delhi Chief Minister Sheila Dikshit and Delhi Police, demanding the immediate arrest of the accused.
East Delhi MP Sandeep Dikshit, the son of the chief minister, and Delhi Health Minister A.K. Walia and Delhi Family Welfare and Education Minister Kiran Walia were heckled when they came to meet the victim's family.
Some protesters entered the hospital premises and had a tiff with police officials.
An assistant commissioner of police was suspended for slapping a 17-year-old girl demonstrator at the hospital.
As television channels flashed the incident, Bani Singh Ahlawat, posted at Khajuri Khas in east Delhi, was suspended for slapping Beenu Rawat, a Class 12 student, a police officer told IANS.
The rape victim was abducted Monday and kept hostage in a flat owned by Manoj, said to be in his 30s.
He lived on the ground floor of the building in Gandhi Nagar in which the victim's family also stayed, police said.
Police teams had been sent to Muzaffarpur in Bihar, from where the accused hailed.
On the social media, people expressed outrage.
Even BJP leader Sushma Swaraj said on twitter: "I am terribly shocked to know about the details of the rape of five-year-old child in Delhi. I had thought that after Damini (Delhi gang rape victim) case thinking will change. Unfortunately, the situation has worsened."