Officials said several people have been detained for questioning.
Senior police officer Ashok Kumar said 26 people died in two separate incidents in the state of Uttar Pradesh, 306 kilometres east of New Delhi, while 13 others died in the neighbouring state of Uttarakhand.
Officials confirmed the death toll has mounted to 72, however, local media reports suggest the tragedy has claimed over 100 lives.
In Saharanpur, besides the 36 deaths reported on Saturday, 23 more victims died at a government hospital in nearby Meerut city that they had been referred to. "In the remaining 10 cases viscera report is still awaited". The police operation has also resulted in the seizure of 9,269 litres of spurious alcohol in Uttar Pradesh and of 1,066 litres in Uttarakhand.
Meanwhile, Uttar Pradesh Chief Minister Yogi Adityanath has ordered strict action in the matter.
"The viscera examination on more bodies is yet to be conducted to find out if these too were alcohol-related deaths", an official said.
At least 64 deaths were reported on Saturday from Saharanpur and Haridwar - adjoining districts of Uttar Pradesh and Uttarakhand states respectively - after drinking the poisonous liquor. They seized more than 2,000 pints of tainted liquor in raids.
A show cause notice has also been issued to the higher officials of the Enforcement Wing of Excise Department for dereliction of duty.
Police arrested eight suspected bootleggers.
In December 2011, hooch tragedy killed 172 people in West Bengal.
Almost 100 people have died in Northern India after drinking tainted bootleg liquor.