Two Turkish citizens were recently detained at Auschwitz for allegedly making Nazi salutes.

The pair of tourists, a man and woman both aged 22, were spotted taking photographs of each other under the notorious “Arbeit macht frei” sign, and were seen raising their arms in an apparent Nazi salute.

The two are students in Budapest, and were staying at a Krakow hotel during their time in Poland.

“They probably will be accused of public promotion of Nazi symbols,” said police spokesman Mariusz Ciarka, according to the Gazeta Wyborcza newspaper.

The accusation is a criminal offense in Poland, and could lead to two years in prison for the suspects if convicted.

Two students from Turkey were similarly detained in October at Majdanek for making the Nazi salute at a group of Israeli tourists. That duo is facing three years in prison.