He died while the girl is battling for her life.
The incident took place at around 11 a.m. in the sprawling JNU campus of India's premier university known for being a hub of radical thinking and leftist ideology.
Akash, 23, seemed well prepared for the vicious attack as he was armed with a pistol, an axe, a knife and a bottle containing poison.
He walked into room number 213 of the School of Languages, in between two classes when not many students were present, and screamed at Roshani, 22, asking her to accompany him.
An incensed Akash tried to fire at her with the locally-assembled pistol. But that did not work.
He then drank the poison and pounced on her with the axe, hitting her five times on the head. Before her stunned classmates could react, he took out his knife and slashed his own neck.
The assailant and victim both slumped to the ground in a pool of blood.
"Akash was taken to All India Institute of Medical Sciences (AIIMS) trauma centre, and he died after a few hours. Roshani was taken to Safdarjung Hospital, where she is still in critical condition," a senior police officer said.
"We have recovered a country made pistol, a bottle of poisonous substance and an axe from the spot," the police officer said.
A student said a besotted Akash had been pursuing Roshani for the last two years. Both the attacker and the victim were from Bihar and were in the third year of the Korean language course.
Kamla Mitra Chenoy, professor in JNU School of International Studies, said Akash was not happy with the lack of response from the girl.
"The JNU staff is very upset this incident happened. We are shocked," he told IANS.
A senior doctor at the Safdarjung Hospital said: "We are trying our best. She is in a very critical condition".
Police officials said a four-page note written in Hindi has been recovered from the spot.
--IANS (Posted on 31-07-2013)