The Paris prosecutor’s office opened an investigation after a Jewish member of the National Assembly, France’s lower house of parliament, received anti-Semitic hate mail, according to the European Jewish Congress.

Parliament member Yael Braun-Pivet published the offensive email on Twitter. “Yid, prepare yourself, soon the camps again,” it read in part, referencing Nazi German concentration camps during World War II and the Holocaust.

Replete with threats and insults, it also evoked international Jewish financial conspiracies.

In response, Parliament member Yael Braun-Pivet posted: “Faced with such filth: denounce, file a complaint, never let anything go.”

French Interior Minister Gerald Darmanin also tweeted: “Infamous and unbearable. All my support to Yael Braun-Pivet.”

Braun-Pivet, an attorney whose family came to France to flee the Nazis in the 1930s, said she was “particularly moved” to see “the national representation united” for the day.