Vedantam Lakshmi Pratyusha was in the second year of her master's degree in the Indian Institute of Technology-Madras, when on Sunday she went missing. And all that was left was a mysterious note that said that the former Tata Consultancy Services employee had decided to study spirituality instead of engineering design. 

On Thursday, four days after she went missing, her father reportedly received a terse call from her in which she had a brief message: "I am safe and will return soon,"

Pratyusha had gone missing on Sunday leaving behind a note in her hotel room addressed to her father saying that she wished to study spirituality, reports India Today

Source: b'Representational image | Source: IIT Madras'

Pratyusha, who hails from Andhra Pradesh was living in the Sabarmathi Hostel inside the campus and her fellow students informed the hostel warden of her disappearance after they found her note, The Times Of India reports

According to reports, Pratyusha had already taken permission for leave from January 17-20 before she left the hostel. 

While she called her father today, there is still no clue about where she made the call from. Police officials have refused to comment on the investigations so far.