Csatáry, 97, served during World War II as a Hungarian police commander in the Jewish ghetto of Kosice, then a part of Hungary but now a Slovakian territory. The newly-launched investigation in Kosice focuses on Csatáry’s alleged involvement in the 1945 deportation of a 17-year-old boy to a labor camp in Germany, according to a September report by the Slovak news agency TASR.

Milan Filicko, a spokesperson for the Kosice prosecutor’s office, told TASR that the son of the person who had been deported filed the complaint against Csatáry in August.

Hungarian police arrested Csatáry in Budapest in July. The Budapest prosecutor’s office is investigating his alleged complicity in the deportation of some 15,000 Jews who were murdered in 1944.

In August, the Hungarian prosecutor´s office dismissed allegations that Csatáry had also helped send 300 Kosice Jews to their deaths in 1941.

A Czechoslovak court sentenced Csatáry to death in absence in 1948 for war crimes. By that time, Csatáry had already fled to Canada, which stripped him of his Canadian citizenship in 1997.