A Bengaluru woman was allegedly raped by an unknown biker who had given her a lift on Sunday, media reports said.

Additional Commissioner of Police (East Zone) Raman Gupta told India Today that the woman, who is a college student, was returning home after a get-together.

He said the woman was taken by the bike rider to an isolated location instead of the designated place.

"A man from whom she had taken a 'lift' made a criminal assault and allegedly raped her. We have registered a rape case and started an investigation," Gupta told the news channel.

The victim was reportedly found behind a truck with a red jacket covering her.

Her friends recovered her after receiving a message.

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ACP Raman Gupta told India Today the woman has been admitted to a hospital and her condition is stable.

Police have launched a case under Section 64 (punishment for rape) of the Bharatiya Nyaya Sanhita (BNS).

Police have started an investigation into the case.

The incident took place amid ongoing nationwide protests against the alleged rape and murder of a female doctor in state-run RG Kar Medical College and Hospital in Kolkata,