In the Turkish capital remain on high alert after a series of attacks this year, a gunman opened fire also in front of the US embassy in Ankara at night in a separate incident.
Russian President Vladimir Putin said, "We have to know Who moved the hands of killers" in the Kremlin announced for sending an investigation team to Turkey.
And kept at the tripartite meeting scheduled on Tuesday in Moscow between the foreign ministers of Turkey, Russia, Iran and ministers to discuss the Syrian crisis, despite the assassination of the Russian ambassador. Said Russian Foreign Minister Sergei Lavrov at the start of the meeting that he must "make no concessions to terrorists."
Turkish policeman killed Altentas born Mert (22-years-old), four bullets on Monday evening, the Russian ambassador in Ankara, Andrei Karlov during the opening of the photo exhibition in the Turkish capital, in an attack that was picked up by cameras screens.
It showed dramatic images Ambassador Karlov fall to the ground on his back while striker lifted his pistol in front of the audience who were stunned and hid behind the ceremony tables.
Armed chanted verses magnification and then demanded to hold accountable all those responsible for what is happening in Syria, Aleppo.
Media reported on Tuesday that the Turkish police used officer's card carried by the entry to the exhibition with his weapon.
The newspaper "Sabah" that the pro-government Altentas caused by firing warning device security metal detectors upon entering the exhibition in Ankara carrying a pistol. But after police showed its own card, allowing him to pass.
For its part, it reported the newspaper "Hurriyet" The Altentas who worked for the unity of anti-riot police in Ankara two and a half ago, stayed in a hotel nearby in order to prepare for the attack.
She said he was in Modhunah wore a suit and tie and shaved at the hotel before heading to the exhibition centre.
Then the police to kill him after the exchange of fire lasted more than 15 minutes.
Altentas hails from the town of Suu Kyi in the western Turkish province of Aydin and attended a private college to train police.
The news agency Dogan said six people close to the shooter Altentas and placed under custody in Aydin, who hailed from the city
He favoured the mayor of Ankara, Melih Prime Gocchik known outspoken, on his account on Twitter to be a striker linked group Islamic preacher Fethullah Gulen lives in the United States and that his Turkish authorities responsible for the coup attempt on July 15 last.
- Investigators Ross
He headed a group of 18 investigators from elements of the intelligence community and Russian diplomats Tuesday to Turkey to investigate the assassination of Ambassador on what news agencies quoted Turkish Kremlin.
He said Kremlin spokesman Dmitry Peskov said, "the group will work in Turkey as part of the investigation into the murder of the Russian Ambassador Andrei Karlov, according to the agreement that has been reached between the Russian and Turkish presidents during their phone conversation."
He described the Russian Presidents Vladimir Putin and Recep Tayyip Erdogan on Monday evening they relate to the assassination of the ambassador as a "provocation" aimed at damaging relations between Moscow and Ankara, Putin said that "the only answer is to intensify the fight against terrorism."
The attack took place at a time when the Turkish-Russian relations is witnessing a convergence since the months after a serious diplomatic crisis arose after dropping the Turkish Aviation Russian military aircraft over the Turkish-Syrian border in November 2015.