The sleuths of the commissioner's task force apprehended a man called Mohd Ghouse and seized the fake currency in the denomination of Rs 1,000 from him.
Police were looking for three more accused.
Ghouse, a fruit vendor, had been named in fake currency seizure cases at various police stations in the city earlier too and arrested, additional deputy commissioner of police N Koti Reddy said.
In 2012, while he was in jail, he met Mohd Islam, a native of Malda in West Bengal, also involved in a counterfeit currency case. Through him Ghouse got in touch with his brother Imamul Haq.
Ali and Mohammed met Ghouse at Barkas today and handed over Rs 5 lakh. Police seized the currency, Rs 2.5 lakh in genuine cash and a two-wheeler, but Ali and Mohammed had fled by then. Police are looking for them, and Islam.
The currency is suspected to have been printed in Malda district.