The gunman opened fire at a photo gallery in Ankara, Turkey AP
The Russian ambassador to Ankara has been shot dead after being attacked in an art gallery in the city, Russia's foreign ministry has said.
Andrey Karlov represented Russia in Turkey since 2013.
His assailant - reportedly a policeman - has also been killed, according to local media citing local officials.
Russian ambassador shooter 'shouted we die in Aleppo, you die here'
Mr Karlov was several minutes into a speech at a photo exhibit in the capital sponsored by the embassy when he was shot in the back. Three other people were reportedly hurt.
"Today in Ankara as a result of an attack, the ambassador of the Russian Federation to Turkey, Andrey Gennadyevich Karlov, received a wound from which he died," said Russian Foreign Ministry spokeswoman Maria Zakharova.
"We regard this as a terrorist act."
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Video footage, prepared to record Mr Karlov's speech, appeared to show the ambassador jolt as numerous shots are be heard. The cameras pan out to show a man holding a pistol and gesticulating.
According to local media, the gunman shouted "We die in Aleppo, you die here" and "don't forget Aleppo, Syria," during the attack.
Photos showed a man wearing the black suit next to a body lying on the floor.
A man gestures near to the body of a man at a photo gallery in Ankara, Turkey (AP)
Further gunfire followed the event but has now ended. Special forces surrounded the building soon after the shooting.
CNN Turk said there were reports that the assailant had entered the gallery with a police ID and had opened fire on the ambassador as he made a speech.
Ankara's mayor said the attack was aimed at ruining Russian-Turkish relations, Reuters reported. However, talks between the two countries and Iran, scheduled for Tuesday, are still expected to go ahead.
Russia calls ambassador assassination 'a terrorist act'
President Vladmir Putin is being briefed on the attack, according to Russian news agency Interfax.
"The President was informed about the attack on the Ambassador of the Russian Federation in Turkey's information is verified, the president plans to hear a report from the Ministry of Foreign Affairs and heads of special services." Press Secretary Dmitry Peskov said, according to the agency.
Andrei Karlov was 62 and he joined the diplomatic service in 1976.
Russian Ambassador to Turkey Andrei Karlov was delivering a speech when the gunman opened fire (AP)
He served as Russia's ambassador to Pyongyang in 2001-2006, and later worked as the chief of the Foreign Ministry's consular department.
Turkey has seen a wave of terrorist attacks in the last year, the government have mainly blamed Kurdish militants.
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