The leader died this morning at 6.15 am, a senior official at the All India Institute of Medical Sciences (AIIMS) told news agency PTI. "Mr Jat had a cardiac arrest which caused damage to his brain following which he was put on a ventilator," doctors said.
Mr Jat had served as Minister of State for Water Resources in the Narendra Modi government. Prime Minister Modi condoled his death, saying: "Anguished by the demise of MP & former Union Minister, Shri Sanwar Lal Jat. This is a big loss for the BJP & the nation. My condolences," he tweeted.
In his message, Prime Minister Modi also said Mr Jat worked extensively for the well-being of villages and farmers.
Mr Jat was later airlifted to the AIIMS from Jaipur after his condition had turned critical.