Hungary is fighting corruption from the Orbán era: a former minister in his government buried millions of dollars in forests.
The investigation suspects that the former Minister of National Development, Miklos Szastak, received a bribe as part of the distribution of government tenders.
As part of the case against Shastak, almost 20 million dollars were confiscated.
The funds were buried in forest areas, and were also hidden in agricultural buildings and warehouses, in residences and in a secret safe.
The confiscated funds were transferred to the State Treasury of Hungary.
Earlier, Viktor Orban's younger brother was arrested in Hungary.