Swedish authorities have extradited to Poland a man suspected of having masterminded the theft of a sign from the Nazi camp at Auschwitz.
Anders Hogstrom arrived in Warsaw before being taken to Krakow, not far from Auschwitz, for questioning, the BBC’s Adam Easton reports.
Hogstrom is a 34-year-old former neo-Nazi leader.
He denies any wrongdoing and told a Swedish newspaper that he was asked to take possession of the sign on behalf of an unnamed collector.
However, he said that he did not want to be involved and tipped off the Polish police.
Five Polish men have have been charged with stealing the sign.
In 1994, Hogstrom helped found the far-right National Socialist Front, but later left the organisation.
If convicted, Hogstrom could face a prison sentence of up to 10 years. He could serve it in Sweden.
After it was stolen, the 5m (16ft) wrought iron sign where were written the words Arbeit Macht Frei (which translates as “work sets you free”), was cut in three pieces.
The sign is being repaired while a replica stands in its place.
The Nazis murdered more than a million people, 90% of them Jews, at Auschwitz, in occupied Poland, during World War II.