Following a tip off, a team of Rajasthan police's special operation group (SOG) nabbed Sunil Gupta and Priyanshu Gupta in Vidhyadhar nagar area and recovered around Rs 36 lakh last night.
"Rs 35 lakh is in new currency notes of 2000 and remaining cash is in demonetised notes of Rs 100," SP, SOG, Vikas Kumar said today.
They were allegedly getting the old notes exchanged on 25 per cent commission, officials said.
Income tax department has been informed and further probe is being carried out, Kumar said.
Earlier, Deedwana police in Nagaur district of the state seized Rs 6.72 lakh of unaccounted cash from a person, including Rs 5.68 lakh in new Rs 2000 notes.
Rest of the amount is in Rs 100 and Rs 50 denomination, police had said, adding they have detained Ajit Malik after he failed to give a satisfactory answer.
On Tuesday, police had detained five persons with Rs 14 lakh new notes from the city outskirts in Bhankrota.
Another Rs 4 lakh, including one lakh in new Rs 2000 denomination, was recovered from three persons near Taranagar of Churu district.