In the article “Russia in the eyes of Muslims”, Al-Qaeda shows their view against Russia:
“As the tragedy in Aleppo unfolded, Russia remained as committed as ever to aiding the Syrian regime and her allies as they continued their massacre of the innocent Muslims of Aleppo, while arrogantly denying any wrongdoing on their part… Indeed the Muslim Ummah has not forgotten the atrocities committed against it by the atheistic Russian regime. It still nurses the wounds that they’ve inflicted upon her in Afghanistan, Chechnya, Georgia and the Crimea. Syria is but another example of Russia’s hatred and animosity it harbors towards Islam and its people. Allah says “And let not those who disbelieve think that they can outstrip (escape from the punishment). Verify, they will never be able to save themselves (from Allah’s punishment). [Al-Anfal:59]”
After giving some information about Altintas and the assassination, they claimed that he did not belong to any group such as Al-Qaeda, ISIS, or Jabihatu An-Nusra.
In the next passages, Altuntas was praised for achieving his holy(!) target:
“Indeed, Mevlut Mert Altintas responded to this cry and became the answers to the prayers of the oppressed Muslims. What a good example this brave warrior has left behind for those who truly believe in Allah and the Last Day, and who desire to come to the aid of their Muslim brothers and sisters… We pray that this ambassador of evil, Andrey Karlov, finds no rest in his final abode and that Allah increases his punishment and torment-amin. And we would like to further remind Russia and the Syrian government “Wherever you may be, death will overtake you, even if you should be within fortified towers. (An-Nisa:78)
“Rather, what is apparent from his speech and actions (as no one but Allãh has access to his heart) is that he had renounced his former profession and turned to his Lord in repentance. He stood up, not for any particular group or sect, but on behalf of the Ummah that has been suffering at the hands of its enemies for decades,” the jihadist al-Risala magazine added.
Turkish Government and Turkish media closely linked to the government blamed Gulen Movement, or as Turkish Government calls ”FETO” for the assassination.