Two senior outlawed Kurdistan Workers' Party, or PKK, militants were arrested before the unauthorized rally that was held by several Kurdish groups in Turkey's southeastern province of Diyarbakir on Saturday.
Kurdish groups held an unauthorized rally in response to a call made by the pro-Kurdish Democratic Peoples' Party, or HDP.
Groups of people gathered in Diyarbakir's Baglar district, along with local HDP officials.
Earlier on Wednesday, the pro-Kurdish opposition Peoples' Democratic Party issued a call for a global demonstration in support of Kobani, the Syrian border town currently under siege by the ISIS.
The two arrested senior outlawed PKK members, Abdullah Kaplan and Cuneyt Yeni, were arrested for plotting to assasinate members of Turkey's judiciary and security forces as well as conspiring to create trouble across Turkey.
Abdullah Kaplan was wounded in a shootout in Kobani when he fought against ISIS and came to Turkey using a false identity.
After his medical treatment he was sent to Diyarbakir to incite anarchy in eastern Turkey.
Another PKK member, Cuneyt Yeni, entered Turkey from PKK camps in northern Iraq.
The deadly pro-Kurdish protests erupted during the Eid al-Adha holiday, only one day after ISIL militants entered parts of Kobani, also known as Ayn Al-Arab, on October 6.