Indian prisoners stoned to death a Pakistani inmate in a jail Wednesday amid mounting tensions over a suicide bombing that Delhi has blamed on its arch-rival neighbour, an official said.

The Pakistani had been eight years into a life term at Jaipur Central Jail in the western state of Rajasthan when he was attacked.

He was stoned to death after a quarrel, Rajasthan state director general of police Kapil Garg told AFP. The killing came amid calls for retribution across India over a car bombing in Kashmir last Thursday which killed at least 40 Indian paramilitaries.

Pakistan-based Islamist group Jaish-e-Mohammed (JeM) has claimed responsibility for the attack.