A Turkish policeman has shot dead Russia’s ambassador to Turkey, Andrei Karlov, apparently in protest at Russia’s involvement in Aleppo.
Several other people were reportedly also injured in the attack, a day after protests in Turkey over Russian support for Syrian President Bashar al-Assad.
The killer, who was in civilian clothes, opened fire at point blank range as Mr Karlov made a speech.
He is said to have died in a shootout with police soon afterwards.
Mr Karlov was rushed to hospital, reports said, but his death was later confirmed by the Russian foreign ministry.
Turkish President Recep Tayyip Erdogan has spoken to Russian President Vladimir Putin by phone about the attack, Mr Erdogan’s office said.
Speaking outside the hospital where Mr Karlov was taken, Ankara’s Mayor, Melih Gokcek, said the killing was intended to ruin his country’s relations with Russia.
The attack was swiftly condemned by other countries:
US state department spokesman John Kirby: “We condemn this act of violence, whatever its source. Our thoughts and prayers are with him and his family”
UK Foreign Secretary Boris Johnson: “Shocked to hear of despicable murder of Russia’s Ambassador to Turkey. My thoughts are with his family. I condemn this cowardly attack”
German Interior minister Thomas de Maiziere said his country stood with Turkey in a common fight against terrorism
French President Francois Hollande “strongly” condemned the killing
While there were protests in recent days about the situation in Aleppo, on a political level the Turkish and Russian governments have been co-operating in the ceasefire operation, the BBC’s Turkey correspondent, Mark Lowen, reports.