A Class 12 student of a private school in Haryana has been detained for allegedly shooting dead the principal on Saturday, officials said.
Upset after being scolded, the commerce student from Yamunanagar attacked principal Ritu Chabra with his father's licensed revolver, police said.
Chhabra suffered three bullet wounds and died in a hospital.
The student was rusticated from school about a fortnight ago for poor attendance and for picking up fights, an official said.
The official said the student came to school around noon with the weapon and said he wanted to meet the principal. Then he headed straight to Chhabra's room and opened fire.
Five members of the school staff, including a peon, caught hold of him, the official said.
Yamunanagar superintendent of police Rajesh Kalia said the youth was detained and an investigation was underway.
Police have also booked his father, a property dealer who could be charged under the arms act.
The case brings to the spotlight a spike in incidents of violence in schools across the country.
In September last year, a 16-year-old boy allegedly murdered a Class 2 schoolmate at a private school in Gurgaon because he wanted an exam postponed.
Earlier this month, a Class 1 boy in Lucknow was attacked by a senior girl with a knife on school premises because she reportedly wanted the school to close early.