The international judiciary says 2,700 members have been removed
Amnesty International say human rights in Turkey are "in peril" following a failed coup attempt in July.
The human rights group say the reaction from Turkish authorities "was swift and brutal", and that there was a crackdown "of exceptional proportions that has continued after a state of emergency declared five days later".
Amnesty has been on the ground in Istanbul and Ankara to document events.
It has released some statistics on the situation:
Amnesty claims detainees have been denied food, water and medical treatment, and verbally abused and threatened.
It says some have been subjected to severe beatings and torture, including rape.
Meanwhile, the international judiciary has also hit out at treatment of Turkish judges.
The Network of the Presidents of the Supreme Judicial Courts of the European Union says it is "deeply concerned" over reports of the recent removal from office of over 2,700 members of the judiciary and prosecutors.
The network says in a statement: "Immediately following the attempted coup the Turkish Republic has suspended, dismissed and/or arrested thousands of people, including many judges."
"Among those are judges of the Council of State and the Court of Cassation of Turkey."
"The number of citizens involved, and the announcement by the President of the Republic of Turkey of the possible restoration of the death penalty, also raise serious concerns."
It has reiterated that the independence of the judiciary "is not a privilege for judges, but a guarantee of respect for human rights and fundamental freedoms, which allows every person to have confidence in the Justice system, the law and the state."
It is urging respect for the rule of law and human rights.
It also echoes caution expressed by the Secretary General of the Council of Europe, and calls for the implementation of existing mechanisms in terms of respect for human rights - both at the level of the Council of Europe and the United Nations.