The 19-year-old victim and the accused Nikhil (22) were studying management at a college here and recently had a break-up.
According to police, Nikhil accosted the girl and her three friends while they were on their way to the classroom this morning. During a heated argument between the two, Nikhil whipped out a knife from his bag and slashed her several times.
Nikhil then stabbed himself around 4-5 times and also slashed his neck.
"Both were rushed to Guru Nanak hospital where Nikhil died during admission. The girl is critical but out of danger," said Deputy Police Commissioner N Chavan.