"The suspect denied having committed the crimes," Ibolya said, adding that during his testimony Csatary's "attitude toward some of his fellow men of a certain religion ... is not what we would consider normal."
Prosecutors detained Csatary in an early morning sweep because they were worried he may try to flee. He has lived at least in two separate Budapest apartments during the last few months.
"We took Csatary into custody at dawn from an address to which he had no connection until now," Ibolya said. "He cooperated with investigators."
Csatary's lawyer said his client had moved to a new location because he was tired of being badgered. On Monday, 40 people held a protest outside one of Csatary's purported homes but he was nowhere to be seen.
According to a summary of the case released by prosecutors, Csatary was a police officer in the Slovakian city of Kosice, at a time part of Hungary.
In May 1944, Csatary was named chief of an internment camp at a Kosice brick factory from where 12,000 Jews were deported to Auschwitz and other Nazi death camps. Authorities said Csatary was present when the trains were loaded and sent on their way.
Csatary "regularly" used a dog whip against the Jewish detainees "without any special reasons and irrespective of the assaulted people's sex, age or health condition," the prosecutors' statement said.
As one train departed with some 80 Jews crammed into one railcar, Csatary refused a request by one of the Jews to cut holes in the walls of the wagon to let more air in, the statement said.