The two accused took the 15-year-old girl, who is hearing and speech impaired, to a toilet in Chembur area yesterday afternoon and allegedly raped her.
The victim lived in a shanty with her parents in Chembur, police said, adding that a case has been registered against the two unknown persons while the girl has been sent for medical examination.
However, the police is finding it difficult to identify the culprits as the victim was not in a position to provide details.
Police suspected that the accused could be from the same area.