Three minors have been detained in connection with the mysterious death of a Class 9 student in northeast Delhi's Karawal Nagar, police said today.Tusshar (16) was found unconscious by some students in his school bathroom and was taken to a hospital yesterday.

He was later referred to the GTB Hospital where he was declared brought dead. CCTV footage revealed that he had a fight with some students near the washroom.

Three of the students with whom he had a fight have been detained, said a senior police officer, adding that they were minors.

They are being questioned. Family members of the deceased alleged that he was thrashed by the students.

On the basis of a complaint by the boy's family, a case was registered.