The Russian ambassador to Ankara, Andrei Karlov, has been shot and seriously injured while visiting a photo gallery in the Turkish capital.
Several other people were reportedly also injured in the attack, a day after protests in Turkey over Russia's military intervention in Syria.
Mr Karlov was taken to hospital to be treated for his injuries.
According to Russian TV, the ambassador had been attending an exhibition called "Russia as seen by Turks".
Of all the places to get shot at as a Russian diplomat, it had to be Turkey. Here's hoping nothing escalates from this.