Romanian President Nicușor Dan has said that Bucharest may take stronger diplomatic measures, including the expulsion of Russia's ambassador, if incidents involving Russian attack drones entering Romanian airspace continue during strikes on Ukraine.

He said this in an interview with BBC journalists, Ukrinform reports.

Dan said Romania has no doubt that a Russian Geran-2 drone crashed into a residential building in the city of Galați on May 29.

According to the Romanian president, experts were able to identify the drone by comparing the recovered debris with an intact Geran-2 UAV that had previously fallen on Romanian territory without detonating.

Asked whether Romania was considering additional measures beyond closing Russia's consulate in Constanta and expelling the Russian consul, Dan replied: "I hope they [the Russians] will stop. If not, there are other measures that can be taken. For example, expelling the ambassador. There is a certain hierarchy of diplomatic measures."