The 25-year-old woman who was found unconscious at Syndicate Bank Layout, near Byadarahalli on Magadi Road, is still in a critical state in Vani Vilas Hospital.
The police are trying to ascertain her identity.
The police suspect the woman, who has bite marks on her body and a head injury, was raped by a gang which picked her up and then tried to murder her.
The Vani Vilas hospital is awaiting pathology reports to confirm rape.
Doctors at the nearby Victoria Hospital said a CT scan which revealed the victim had sustained severe injury and blood clot in her brain.
The clot was removed through surgical procedure on Monday, said neurosurgeon Balaji Pai.
She was then put on a ventilator and shifted to the ICU. She is still unconscious and her condition is still critical. “As of now we cannot say anything about her condition,” Dr. Pai said.