Authorities in Hungary have arrested Ladislaus Csizsik-Csatary, 97, the world’s most wanted Nazi war criminal. He was tracked down this week by Britain’s The Sun newspaper after decades in hiding.

He is facing an indictment for Holocaust war crimes.

He is accused of sending nearly 16,000 Jews to the Auschwitz death camp while serving as the police commander in charge of a Jewish ghetto. Csizsik-Csatary was commander of the ghetto in Kassa (today Kosice, Slovakia).

He “was known to be a sadist, he had a determination to round all Jews up and forcibly deport them to Poland,” said Dr. Efraim Zuroff, head of the Wiesenthal Center. He tortured and beat the Jews under his command, and shot anyone who tried to escape on sight.

When writers from The Sun tracked him down, he refused to talk about his past, and slammed the door in their faces.