Police in Bulgaria’s Plovdiv have launched an investigation into a suspected money laundering scheme involving close to USD 1 M, the Prosecutor’s Office of Bulgaria announced on Wednesday.

A 53-year old man has been detained in police custody for 24 hours in connection with the investigation supervised by Plovdiv Region Prosecutor’s Office.

The man is a former manager of a bank branch in Bulgaria’s second largest city, according to BNR public radio broadcaster.

The name of the bank wasn’t disclosed.

The investigation has found that bank transfers to China, Netherlands, USA and Malta had been made using false documents. More than 25 transactions had been carried out between March 2015 and January 2016, BNR said citing police sources.

A 29 year-old man from Plovdiv who made the transfers has been detained on charges of using false documents in the transactions. He was released on a BGN 10,000 bail after he explained his own actions as well as the actions of possible accomplices and agreed to cooperate with the investigation, the Prosecutor’s Office said.

The investigation also looks into other money transfers totalling more than USD 1 M to establish the origin of the funds and decide whether to press money laundering charges for that sum as well.