Parliament attack convict Afzal Guru, who was hanged on Saturday morning at Tihar Jail, was buried inside the prison complex soon after his execution.
"He (Guru) was buried near jail number three," a top Tihar Jail official told PTI.
Guru spent over 10 years years on death row in the Tihar prison and was hanged at the jail at 8am in an operation shrouded in secrecy.
The mercy plea of 43-year-old Guru, who was sentenced to death in 2002 by a special court and later upheld by the Supreme Court in 2005, was rejected by President Pranab Mukherjee a few days ago, Rashtrapati Bhavan spokesperson Venu Rajamony said.
The body of Guru was buried in Tihar Jail itself as it was done in the case of Pakistani terrorist Ajmal Kasab, who was buried in Pune's Yerwada jail soon after his execution.
Vimla Mehra, DG (prisons), said Afzal Guru was in good health and was hanged at 8am in the presence of a magistrate, a doctor and other jail officials.
He woke up early in the morning and food was served to him, she said.
Mehra also said normal procedure was followed in the hanging.
She said Afzal Guru was buried immediately after the hanging.
Guru was hanged days after the President refused his mercy petition, officials said.
"Afzal Guru was hanged at 8am," home secretary RK Singh told reporters.
"We received the president's rejection of his mercy plea on February 3. We moved accordingly then," he said.
Asked about Afzal's burial, he said: "we will follow the jail manual and act according to the law".
Guru was convicted for his role in the attack on Parliament in 2001.
Nine people were killed in the December 2001 Parliament attack when five heavily-armed Pakistani terrorists drove into the complex and opened fire. The terrorists were shot dead.
(With inputs from IANS and PTI)