Russia has complained to Turkish officials about the Ukrainian military using drones manufactured in Turkey.
Speaking at a media briefing on Friday, a Turkish official said Ankara had told Moscow that Turkish drone-maker Baykar Technologies is a private company and Ukraine's purchase of the devices had been completed before the war.
According to CNN reporting, Ukrainian officials have been touting Baykar's Bayraktar TB2 drones as one of the most effective weapons in their arsenal.
Last week, CNN gained rare access to the Baykar production facility in Turkey for an exclusive interview with its chief technology officer, Selcuk Bayraktar.
Bayraktar, who is also the son-in-law of Turkish President Recep Tayyip Erdogan, said the drone was "doing what it was designed to do and upgraded to do."