Deniz Yücel, the Turkey representative of the German Die Welt daily, has been detained by police over terrorism charges in İstanbul, according to a Friday statement by lawyer representing Yücel.

Lawyer Veysel OK told BBC Turk that his client has been under detention over 72 hours at İstanbul Police Headquarters.

“Because a confidentiality order issued on the case, we do not know what he is accused of. But I am guessing he is accused of being a member of a terrorist organization and spreading terrorist propaganda,” Ok stated.

In a related development, several Turkish and German media outlets reported that Yücel was detained for publishing stories on the leaked emails of President Recep Tayyip Erdoğan’s son-in-law and Energy Minister Berat Albayrak.

The prosecutor conducting the investigation, Hasan Yılmaz, reportedly cited as offenses “manipulating information received from leaked emails of Albayrak and discrediting the government.”

Journalists including Yücel were accused of trying to create the perception that Albayrak is linked to the Islamic State in Iraq and the Levant (ISIL).

After a detention warrant was issued for Yücel, he turned himself to police in İstanbul on Tuesday.