Six people are under arrest for suspected money-laundering involving about ¥570 million wired from a U.S. bank to Japan, police said Thursday.

The suspects are Nyeche Obeneme, 36, an auto parts dealer in Okegawa, Saitama Prefecture, who has Nigerian citizenship, two other Nigerian men, a Ghanaian man, and a man and woman from Japan.

The two unnamed Nigerian men and the Ghanaian man reportedly work at junkyards tied to Obeneme's company.