The Russian ambassador to Turkey has died after being shot in Turkey, according to Reuters.
Eyewitnesses claim Andrey Karlov was shot during an art exhibition. Reports suggest the gunman is still at large.
Russian sources previously confirmed that Karlov, who has represented Russia in Turkey since 2013, had been taken to hospital following the incident.
A picture has emerged on social media apparently showing the aftermath of the incident, but it has yet to be verified.
The attack comes after Turkey witnessed widespread protests over Russia's involvement in Syria during the weekend, with a large number of people gathering in front of the Russian embassy.
The Russian regime backs Syrian President Bashar al-Assad while Turkey has backed the rebel forces who have opposed the country's government during Syria's bloody and prolonged civil war.
Turkey has witnessed a number of terrorist incidents in recent months. The Government has held Kurdish militants responsible for several attacks, but Islamic State also has a considerable presence in the country.