The man who allegedly stabbed the student, has been arrested.
The man who allegedly stabbed her has been identified as Alagesan, who is associated with a mineral water business.
He tried to escape after stabbing Aswini, but locals caught hold of him and handed him over to the police.
Although Aswini was rushed to the hospital, doctors declared that she was brought dead.
A senior police officer told NDTV "We are investigating".