The woman, a resident of suburban Powai, approached the police on Friday evening claiming that a man posing as a courier boy had entered her house and sexually assaulted her.
According to her complaint, the unidentified accused entered her house on December 7 on the pretext of delivering a courier and finding her alone raped her and then fled away with some of her belongings.
Based on her complaint, the police registered a case of rape and robbery. Police are trying to make a sketch of the accused based on the description given by the victim.
Confirming the incident, Deputy Commissioner of Police Cherring Dorje said a probe was on.
Meanwhile, a 41-year-old person has been detained by Powai police in connection with the incident.