The matter came to light when the victim somehow escaped on Jan 20 and informed police about her ordeal.
The woman, a resident of west Delhi's Begumpur, had eloped with her neighbour Ranjan as he promised her to marry her.
"Ranjan took the victim to the house of one of his friends. He kept her captive there and raped her repeatedly along with his friend," said police as per the victim's statement.
A case regarding the incident has been registered against the accused after the victim's medical examination confirmed that she was raped.