MOSCOW (Sputnik) — Earlier in the day, Karlov was killed by a gunman at an art gallery exhibition opening in Ankara. Three other people were also injured in the attack.
"Russian Investigative Committee's main department for the most serious cases has opened a criminal case over the murder of Russian Ambassador to Turkey Andrey Karlov," the committee said in a statement.
19 December 2016, 19:28 GMT
The crime involved article 361 of the criminal code, the statement said.
The article deals with punishment for acts of international terrorism which have caused a person's death.
Video footage of the events indicates that the attack may be linked to Russia's stance on fighting international terrorism, the statement added.
