Fresh warrants were issued on Friday for four suspects released earlier this week after initially being arrested during a meeting in Istanbul on terror charges.
They were arrested on July 5 alongside six others in a police raid during a meeting on Buyukada, one of Istanbul’s Princes’ Islands.
The warrants were placed after Istanbul prosecutors rejected their releases and an Istanbul court ratified the ruling.
The suspects were allegedly planning provocative events meant to fuel unrest across Turkey similar to the 2013 Gezi Park protests.
A Turkish court had ruled on Tuesday that six suspects, including German national Peter Steudtner and Amnesty International Turkey Director Idil Eser, would be remanded in custody, while the four others were released.
Steudtner’s detention has stoked tension with Germany, with its Foreign Ministry calling on Turkish authorities to release him, describing his detention as “unjustified” and the charges against the group “absurd”.