A 21-year-old girl from Kerala was allegedly kept captive and repeatedly raped by her male acquaintance at a residence in south Delhi's Vasant Kunj area since the last one month.

The incident came to light yesterday when the girl managed to contact her mother back in Kerala as the accused has gone to his native place Bhopal.

Her mother then alerted police through her Delhi-based relatives.

When a police team reached the spot last evening, they found the flat locked from outside.

The girl was then rescued after the locks were broken, police said.

The accused, who hails from Bhopal was pursuing his MBA in Delhi and had brought the girl from Kerala to Delhi after luring her of getting her a good job.

"Once the girl reached Delhi, he allegedly raped her and captured the act on his mobile phone and blackmailed her into keeping quiet.

He also restricted the girl from going anywhere," said a police official.

Police has registered a case and a team has been sent to arrest the accused from Bhopal.