They set up dozens of companies to trade in illegal invoices.

Having acquired and established dozens of limited liability companies, Dung orchestrated the sale of VAT invoices to numerous clients, generating hundreds of billions of dong in total sales.

The police in Ba Dinh district, Hanoi, have initiated criminal proceedings and temporarily detained Nguyen Thi Kim Dung (born in 1985, residing in Ba Dinh district, Hanoi) to investigate the crime of illegally buying and selling invoices and documents for collecting state budget revenue.

Although also under investigation for the same crime, Nguyen Thi Ngoc Anh (born in 1987) and Nguyen Van Hai (born in 1987), both from Vinh Phuc province, were released on bail.

Dung's illegal invoice trading ring was discovered by the Ba Dinh District Police at the end of February 2016.

Evidence seized in the case.

Prior to that, starting in early 2015, Dung used the tactic of acquiring "defunct" companies and establishing dozens of new companies to illegally trade invoices.

Initially, the police determined that the total value of invoices Dung had sold to businesses amounted to hundreds of billions of VND.

Ba Dinh District Police arrested Dung and her accomplices at a guesthouse in the district. The evidence seized at the time of the inspection included: 6 cardboard boxes containing 11 sets of stamps and 157 VAT invoice books bearing the names of 11 limited liability companies in Hanoi.

The incident is currently under investigation.

According to VOV