Naji Jerf was killed in the southern Turkish city of Gaziantep on Sunday. Turkish authorities opened an investigation into the killing of the journalist.
“Daesh has confirmed in a statement the assassination of the editor-in-chief of the Hentah monthly <…> Naji Jerf,” Al Hadath television channel said.
On December 15, Jerf published a documentary, describing the killings of Syrian activists by Daesh in the Syrian city of Aleppo in 2013 and 2014.
Earlier in October, Daesh claimed responsibility for the murder of two Syrian activists, who were found beheaded in the southeastern Turkish city of Urfa.
Daesh, which is outlawed in Russia and other countries, has seized large areas in Syria and Iraq and declared a caliphate on territories under its control. The group is currently considered to be one of the main threats to global security.