Police took 17 more suspects into custody on Saturday, including three children, for the murders of four people killed during the countrywide demonstrations in October.

The murders took place on Oct. 5, during countrywide pro-PKK protests. Attackers reportedly armed with machetes and guns killed four friends – 16-year-old Yasin Börü, 26-year-old Hakan Gökgöz, 19-year-old Hüseyin Dakak and 28-year-old Riyad Güneş in the southeastern province of Diyarbakır and their bodies were mutilated by the attackers afterward.

The chief public prosecutor's office of Diyarbakır confirmed that one of the two detained suspects has been arrested and said that seven more suspects are being tracked down by the police.

The October protests erupted when the Syrian border town of Kobani came under attack by Islamic State of Iraq and al-Sham (ISIS) militants and it was alleged that the Turkish government was not doing enough to help the mostly Kurdish population there.

Meanwhile, an 18-year-old protester was killed Saturday in unclear circumstances during clashes with police in the town of Yüksekova.