Guerrillas carried out an action targeting the Security General Directorate of the Ministry of Internal Affairs near the Parliament in Kızılay, in Ankara on 1 October. The action was carried out on the day when MPs met in parliament for the first time after the summer recess. The sacrificial action was carried out by a team affiliated with the Brigade of the Immortals, according to the People’s Defense Center (HSM) Headquarters Command.

The Turkish police have been conducting detention operations in several cities since the day of the action. The detentions, described as an "anti-terror operation", were justified by the Turkish authorities on the grounds of alleged links of the persons concerned to the Kurdistan Workers' Party (PKK) as well as alleged support for the guerrilla action in Ankara.

On 2 October, at least 20 people were taken into custody in two police operations in Istanbul and Kırıklareli, targeting the People's Democratic Congress (HDK) and the People's Democratic Party (HDP). A confidentiality order was imposed on the investigation. Those detained were also prohibited from accessing a lawyer for 24 hours. The detainees are currently held at the Provincial Security Directorate of Istanbul and are expected to give their statements today.

Interior Minister Ali Yerlikaya announced yesterday (3 October) that 55 people were taken into custody in operations in 16 cities, including Urfa, Mardin, Diyarbakır, Antep, Mersin, Şırnak, Istanbul, Bursa, Batman, Denizli, Adana, Kayseri, Antalya, Konya, Isparta and Kocaeli.

Yerlikaya announced on Wednesday that 37 more people have been taken into custody in 15 cities, including Istanbul, Van, Urfa, Elazığ, Düzce, Diyarbakır, Bursa, Edirne, Kırklareli, Kilis, Iğdır, Hatay, Adana, Maraş and Denizli.

A number of Syrians were reportedly taken into custody during the operation in Adana.

With today’s detentions, the number of those taken into custody has risen to 112.