Evidence provided by the secret witness dubbed
Garson was used in trials against 4000 Turkish police officers accused of being members of the
Gülen movement. In the
Kobani trial, the former Mayor of Diyarbakır
Gültan Kişanak is accused by secret witnesses of organizing the
Kobanî protests supporting the Kurds during the
Siege of Kobanî by the
Islamic State (IS).
Eren Erdem of the
Republican People's Party (CHP) was prosecuted for revealing the identity of a secret witness but found not guilty of the crime and his release was ordered in January 2019. However, the prosecution issued a new arrest warrant the day after the verdict alleging a flight risk and Erdem was sentenced to over 4 years imprisonment due to a testimony of a secret witness on 1 March 2019. The American pastor Andrew Brunson was prosecuted also on grounds of testimony of a secret witness accusing him of supporting the creation of a
Kurdish Christian state. Brunson was later released in 2018, following an alteration of the testimonies provided by three secret witnesses during the final day of the trial. During the
Ergenekon trials against members of the so-called
deep state of Turkey,
Şemdin Sakık of the
Kurdistan Workers' Party (PKK) acted as one of over 40 secret witnesses, but during the trial he decided to reveal his identity. In Turkey the use of secret witnesses has been a target for criticism by the Peoples' Democratic Party (HDP) but also of
Nationalist Movement Party (MHP)
Emma Sinclair-Webb of the
Human Rights Watch, also condemned the use of secret witnesses in trials against
mayors dismissed from public office in Turkey. == United Kingdom ==