 In December 2016, the Hungarian Central Bank has issued a warning that OneCoin is a pyramid scheme.And in China, several members and investors of OneCoin were arrested in 2016 and $30.8 million USD of assets were seized.In March 2017, the Croatian National Bank (HNB) advised the public to "exercise a high degree of caution" in decisions involving OneCoin, noted that OneCoin operations are not supervised by the HNB, and warned that possible losses will be fully borne by the investors.