Principal Ritu Chhabra was shot at thrice by the suspended Class 12 student during a meeting with his parents in the premises of Swami Vivekanand Public School in the city.
The student had been recently suspended and expelled from the school.
Police said the boy's father is a financier and the pistol used in the incident belonged to the father and is a licensed one.
"School staff, students and teachers caught the accused while he was trying to escape and handed him over to police," said a senior police officer.
Police said that prima facie investigations suggest that the boy was accompanied by at least one of his friends.
More than five rounds were fired, triggering panic and horror among the school staff, teachers and students.
The injured principal was rushed to hospital and declared dead by doctors after some time.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
