Turkey and Russia are jointly investigating the ambassador assassination case after an unprecedented agreement between Turkish President Recep Tayyip Erdogan and Russian President Vladimir Putin.

Turkey and Russia were initially on opposite sides of the Syria crisis, but the rhetoric has warmed considerably since a reconciliation deal was signed earlier this year.

Moscow and Ankara are now working closely together to evacuate citizens from the battered city of Aleppo.

Turkish experts say the assassination incident could bring Turkey even closer to Russia over Syria issue.

"What is more.... if the assassination had not been carried out," said Ahamed K. Han, Turkish scholar.

"The assassination will likely make Turkey change its attitude towards the Syria issue. Russia will be tougher in terms of diplomacy. It will probably demand that Turkey make more compromises and draw closer to Russia's stance," said Fatih Ozbay, Turkish Scholar.