WATCH: Indian teen pushed to her death from second floor by drill instructor

Indian police have arrested a drill instructor who pushed a university student from the second floor of a building to her death, during a failed drill training, officials said Friday.

Nineteen-year-old N. Loukishwari, who was standing on a window ledge "looking hesitant to jump," was pushed by her instructor, according to local media reports.

But instead of landing on the crash net held down by other university students, she struck a concrete surface cracking her head violently and died on her way to hospital.

Horrified onlookers watched the accident which was captured on video and public outrage ensued after the footage went viral on social media.

India uni student drill death 2 (Supplied)

The trainer, identified as R. Aroumougham, was later arrested, while the National Disaster Management Authority, which stages mock disaster drills across India, said it did not organize or approve the drill.

One of the university students who participated in the drill said to the Times of India newspaper that at the beginning of the training, the victim showed interest in jumping but later changed her mind. However, the trainer then insisted that she participate, according to the report.