The baby, from Vikaspuri, had been sleeping with her mother at a make-shift shelter in a police housing complex when she was taken to a nearby jungle and raped around 10pm, police say.
Her mother only realised she was missing around 11pm and informed police.
When Vikaspuri officers finally arrived at the scene, they found the 11-month-old in an unconscious state and immediately took her to the intensive care unit at Deen Dayal Upadhyay Hospital.
A senior officer said: ‘The girl was bleeding profusely. Doctors at the hospital have said that her condition is serious.
After discovering an abandoned mobile phone near the child, officers were able to trace it back to the suspect.
He added: ‘The police team was helped by the recovery of the mobile phone to track the location of the accused. We traced him to the labour camp.’
Police say the accused man lived with other workers in the building and that he admitted that he took the child around 10pm.
The officer said: ‘He said he then took her to the bushes beside a drain and raped her for nearly two hours.’
The man has now been charged with rape under Section 376 of the Indian Penal Code and Section 6 of the POCSO Act and is being held at Tihar Jail.
The child’s father later told police: ‘I was horrified to see my daughter’s condition. Her clothes were torn and she had nail marks all over the body. The severe injuries might have a lifelong impact on her health.’.