The four belonged to - Telangana, Andhra Pradesh and Chhattisgarh - and were making transactions in the district while trading in cattle, cotton and paddy, Deputy Superintendent of Police, Y Jagannath Rao said.
On a tip off, the police raided their places here and seized counterfeit currency notes in denomination of Rs 1,000, Rs 500 and Rs 100 besides a colour printer, colour cartridges and mobile phones, Rao said.
This was the second such seizure in the district. On February 27, Rs 4.73 lakh counterfeit currency notes of different denominations were seized at Antamada under Chandeli police station.
Efforts were on to nab those involved, he added.