UPDATE: Russian Ambassador Shot in Turkey is Dead, Shooter Claims Revenge for Aleppo.

Russia’s ambassador to Turkey, Andrey Karlov, is reportedly dead after he was shot by a gunman at an art gallery in Ankara. According to reports, several others were injured in the attack, which comes as protests are taking place in the country over Russia’s involvement in the Syrian civil war.

According to the BBC, the gunman, who was dressed in a suit, shouted, “Don’t forget about Aleppo, don’t forget about Syria,” and added: “Allahu Akhbar.” Karlov was speaking at an event (“How Turkey sees Russia”) at the gallery when he was shot from behind and collapsed.

CNN Turk reported that shots could still be heard from the area where Karlov was taken down, and that a shootout ensued between police and the attacker. According to his official bio, Karlov was an experienced diplomat who previously served in Russia’s embassies in North Korea and South Korea. He was in his current post since July 2013, and was married and had a son.