Warsaw, Dec 21 (RIA Novosti) An iron sign stolen from the entrance to the Nazi-era Auschwitz-Birkenau concentration camp in Poland has been found, a police spokesperson said Monday.

The infamous – Arbeit macht frei – sign was found in a small town in northern Poland. It was sawn in three parts, each containing one word. Police detained five suspects, all of them men aged from 20 to 39.

The sign, which is German for “Work Sets You Free”, disappeared between 4 a.m. and 5 a.m. last Friday.

“The detained men are now being taken by a special convoy to a police department in Krakow, where they would be interrogated,” the spokesperson said.

Auschwitz-Birkenau was the largest of all the concentration and extermination camps operated by the Nazis during World War II. More than 1 million people – 90 percent of them Jews – died there.