ANKARA, Turkey (AP) — Turkey's state-run news agency says a court has ordered nine student protesters arrested on charges of "terrorist propaganda."

Anadolu Agency said six other Bogazici University students were released late on Tuesday after questioning.

The students were detained last week in Istanbul after students commemorating fallen soldiers in Turkey's cross-border operation in Syria were reportedly attacked by other students protesting the military offensive.

President Recep Tayyip Erdogan called those who took part in the attack "terrorists" and promised to have them expelled from university.

Turkey launched the cross-border military offensive on Jan. 20 to oust Syrian Kurdish militia, whom it considers as terrorists, from a border enclave.

Turkey has not tolerated criticism of the military offensive and more than 580 people have been detained for "propaganda" on social media.