One of the suspected terrorists from the Revolutionary People's Liberation Party-Front (DHKP-C), who on Monday night in a coffeehouse threatened "yes" vote supporters for the upcoming referendum, was identified as Umut Güney, a member of the main opposition Republican People's Party (CHP) youth branch.
The footage revealed on Monday showed three armed and masked terrorists carrying guns and telling people in the coffee house in Istanbul's Okmeydanı district that anyone who promotes the "yes" vote, supports the Justice and Development Party (AK Party) or President Recep Tayyip Erdoğan would be punished.
"We will not allow the fascist AK Party's propaganda activities in our neighborhood," one of the militants is seen saying in the video, adding: "Everyone shall know this. This neighborhood is ours and will remain so.
"If anyone works for the AK Party, the MHP or any other fascist groups in this neighborhood, they will be punished," the militant said.
The three suspects were quickly detained after the video circulated on social media. One of the suspects, who was detected from the red pants he wore in a demonstration previously, was identified as Umut Güney, a member of the main opposition CHP's youth branch in the Bahçelievler district.
It was also revealed that the CHP deputy Barış Yarkadaş demanded his release following Güney's detention last November in another case. "The member of our youth branch of the Bahçelievler district, Umut Güney, was detained in front of Cumhuriyet [newspaper]. This unfair detention should immediately end," Yarkadaş wrote on his Twitter account. Photos of Güney with CHP Chairman Kemal Kılıçdaroğlu were also revealed.
The DHKP-C is officially listed as a terrorist organization by both the EU and the U.S.
The group was behind a suicide bombing that targeted the American Embassy in Ankara in 2013, leaving a Turkish security guard dead. Also in August 2015, two suspected members of the DHKP-C opened fire on the U.S. Consulate in Istanbul and fled when police returned fire. The attack was conducted by two women and one of them, Hatice Aşık, 42, was wounded and captured by security forces during the attack, according to the Istanbul governor's office.
Additionally, the group was responsible for the killing of Istanbul prosecutor Mehmet Selim Kiraz, in a courthouse complex in Istanbul back in March 2015. Kiraz was killed hours after he was taken hostage.