"While it is understandable, and legitimate, that the government wishes to investigate and punish those responsible for this bloody coup attempt, they must abide by the rule of law and respect freedom of expression", said Amnesty's Turkey researcher Andrew Gardner.
Erdogan on Wednesday told al-Jazeera some of those who have been detained after the attempted coup have started confessing and providing what the Turkish leader said is information that links the coup attempt to Gulen.
"There is an investigation into those linked to FETO", the ministry said, but did not give further details on what kind of employees were suspended.
Those arrested include former air force commander General Akin Ozturk, alleged to be the ringleader of the July 15 uprising, and General Adem Hududi, commander of Turkey's Second Army, which is in charge of countering possible threats to Turkey from Syria, Iran and Iraq, the state-run Anadolu Agency said.
President Tayyip Erdogan and the government accuse Fethullah Gulen of orchestrating a failed military takeover on Friday in which at least 232 people were killed, and have called in speeches for his extradition from the United States.
Authorities have rounded up about 9,000 people - including 115 generals, 350 officers, 4,800 other military personnel and 60 military high school students - for alleged involvement in the coup attempt.
Turkey has filed a dossier in electronic form of material about Gulen with the US government, White House spokesman Josh Earnest said. In Washington, the State Department confirmed that Washington did receive some "materials" from Ankara, but that it is working with the Justice Department to review and analyze "whether they constitute a formal extradition request". A White House spokesman did not give details about the USA position on Gulen's possible extradition, except to say the decision will be made according to a longstanding treaty between Ankara and Washington.
Erdogan requested in a call Tuesday with President Barack Obama that the USA return Gulen, now living in Pennsylvania, to Turkey. In the wake of the coup attempt Hizmet has been designated a terrorist organisation by the Turkish government.
Despite living in self-imposed exile in the USA since 1999, Gulen has maintained a level of influence in Turkey second only to that of Erdogan.
"If the AKP is ready, we are in for the death penalty", Bahceli said.
He has previously denied accusations he engineered the coup attempt last Friday night.
"Let me be very clear", she said.
"I'm sorry but this parallel terrorist organization will no longer be an effective pawn for any country", Yildirim said. He projected a more conciliatory tone toward the US and Russian Federation.
Erdogan also said he would approve a parliamentary measure to reinstate the death penalty even if it would jeopardize Turkey's bid to join the European Union. Erdogan said restoring capital punishment is being considered because of popular pressure, and the final decision rests with parliament.
If yes, the request would go before a judge in the United States who would rule on whether probable cause existed that a crime was committed and that the accused person did it.