GURGAON: Azad Singh Yadav, father of one of the two teenagers who allegedly shot dead a student in a school here, confessed in a city court on Saturday that he taught the boy how to operate and fire a gun. Yadav was sent to one-day police remand.

Yadav, who gave in to police pressure and surrendered at the Sector 40 police station here late Friday after being on the run for four days, was produced before District Sessions Judge Surya Pratap Singh.

"I trained my son how to operate the weapon. It is my fault. My son has committed a grave sin and he should be punished accordingly. I feel sorry for the victim's family," Yadav said before the magistrate.

He told the court that the gun used in the crime belongs to his friend R.S. Dalal, a state official.

Yadav was slapped with murder and criminal conspiracy charges.

Earlier in the day, police  registered a case of negligence against Dalal for improperly handling the firearm.

"Teams have been fanned out to arrest Dalal," Assistant Commissioner of Police (ACP) Summit Kumar said. The firing occurred in the elite Euro International School, which claims to be an institution of international stature, in Sector 45 close to the national capital, well after the school hours Tuesday.

Abhishek Tyagi, 14, had just climbed down the stairs to the ground floor to board the school bus back home when he was allegedly shot dead by the two students. Tyagi lay dead in a pool of blood on the stairs, with two bullets in the chest and one in the forehead.

The two boys are cooling their heels in a Faridabad juvenile remand home.