A couple arrested in Uttar Pradesh with fake Indian currency have admitted to circulating over 10 million fake notes in the state, the police said Tuesday.

Zaquir and Mamta Sahi were arrested on Sunday from Bhalua village in Siddharthnagar district with Rs 575,000 in fake currency. Most currency in their possession were in the denomination of Rs 500 and Rs 1,000.

This is the second major fake currency haul after a racket surfaced in the State Bank of India branch in Domariyaganj in Siddharthnagar town following the arrest of its cashier Sudhakar Tripathi July 29.

Zaquir and Sahi revealed that they used to buy fake currency at half the value from a man in Bihar and circulate them in Uttar Pradesh, Siddharthnagar Superintendent of Police Anil Das told IANS.

The two are natives of Motihari in Bihar and were suspected to be working along with Tripathi and his partner Abid Sheikh.

The police said a police team would soon leave for Bihar. "Two of their associates, Surendra and Ramesh, managed to escape. We hope to arrest them soon," Das added.