Turkish Prime Minister Ahmet Davutoglu on Tuesday criticized a visit to Russia by the main Kurdish opposition party leader, at a time when Ankara is at loggerheads with Moscow over the downing of a Russian warplane, AFP reports.

Selahattin Demirtas, leader of the opposition Democratic Peoples' Party (HDP), is set to meet Russian Foreign Minister Sergei Lavrov on Wednesday, the first high profile trip by any Turkish figure since the plane crisis.

"Why didn't they (the HDP) go two months ago? Why are they going at such a time?" Davutoglu asked his party's lawmakers at a meeting the parliament.