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Kanpur: In the biggest ever haul of demonetised currency, the National Investigation Agency (NIA) in a joint raid with the Uttar Pradesh Police, has unearthed old currency notes estimated to be worth Rs 100 crore at least from Uttar Pradesh's industrial hub Kanpur, sources have told Times Now.

They are still counting the exact amount of money, the sources have added. An officer told PTI that a team from the Reserve Bank of India and Income Tax department would shortly give the exact amount of the seized currency.

#BREAKING: Biggest ever seizure of DeMo currency | Shocking numbers tumble out of UP's industrial hub | Massive seizure by NIA and U.P Police | Over 100 crore cash seized in joint operation

Nikunj Garg with more details pic.twitter.com/7SEPOwoukz — TIMES NOW (@TimesNow) January 16, 2018

"Kanpur police has unearthed huge amount of old currency notes from a locked house. Negotiators who promised to get it exchanged were also arrested," a police officer told PTI.

The police also refused to divulge the names of the arrested.

"We are looking if there was any involvement of government officers," police sources said.

Another officer said the raid was conducted in Seesamau pocket of Kanpur and some people were detained from a hotel in Swaroop Nagar pocket.

Inspector General (Kanpur Range) Alok Singh is monitoring the case.