The owner of an Ankara-based printing house that had printed the placard with cartoons targeting President Recep Tayyip Erdogan has been briefly detained.

An Ankara court on Wednesday sent four students from Middle East Technical University (METU) to prison for “insulting” Erdoğan with a placard they carried during the university’s graduation ceremony, the state-run Anadolu news agency reported. The caricature was first published in 2006 by the Penguen political satire magazine, against which then-Prime Minister Erdoğan filed a lawsuit. However, an Ankara court had dismissed the suit, citing freedom of expression.

Ankara Bar Association’s Vice President Erinç Sağkan told Deutsche Welle on Wednesday that the owner of the printing house that printed the placard for the ceremony was detained along with four students. While the students were put in pre-trial detention, the printing house owner was released later Wednesday.