The accused - Suresh Sahu (24), Harish Chandrakar (25), Trinath Mahanand (24) and Vinay Yadav (24) - were arrested yesterday.
Facebook said the goal of the test was to help new users understand how to sign up to Facebook with their real name and connect with their friends and family.
The model told police that she had met the accused 15-20 days ago in Delhi and that they had promised her to arrange a meeting with a film and TV director in Mumbai.
Police said the girl was with her mother and younger sister, who are undergoing treatment at the Mother and Child Health Care Centre (MCH) of the District Headquarters Hospital.
Kulbhushan Jadhav met his wife and mother for the first time on Monday since he was sentenced to death eight months ago by Pakistan on espionage charges that India says are concocted.
The shrine made on a budget of Rs. 2.2 crore is an attempt to end the discrimination meted out to non-Parsi spouses in the community.