The student, Akash, was in the middle of an argument with his classmate, Roshni, 22, when he suddenly hit her on the head and then stabbed her again and again on the neck with the cleaver, inflicting serious injuries.
Other students who witnessed the incident said Akash then turned on them with a gun and threatened to shoot when they tried to help a badly wounded Roshni. Some claimed that he did pull the trigger but the country-made pistol did not shoot.
The student then slit his own throat with the cleaver
A student who was there said, "Akash was very disturbed. He had a country-made gun and threatened students. He was not allowing us to enter the classroom, but we managed to enter. He injured himself before we could do anything."
Akash and Roshni were rushed to hospital, but the young man died on the way, of poisoning, doctors said. The police said he seemed to have consumed rat poison before he attacked the young woman. The injury to his throat was superficial.
Roshni is reportedly in critical condition at the Safdarjung Hospital.
Both Akash and Roshni were third-year students of Korean at JNU's school of languages and both lived in hostels on campus. The police are trying to find out why Akash attacked Roshni. They are also investigating how he managed to get the weapons to class.
Shocked students at JNU are now demanding better security.