The drone struck a 10th-floor apartment starting a fire, the inspectorate said. The post showed firefighters at the site and debris scattered on the ground.
It added that the drone’s entire explosive payload detonated and around 70 people were evacuated. The post did not provide further details about the drone. It said the fire was eventually put out.
In a separate incident, a drone without an explosive charge was found around Basesti in Maramures county in northwestern Romania and the area was secured, TVR broadcaster said late on Thursday, citing local authorities.
The authorities were investigating the origin of the drone, which the report said had a wingspan of about 3 metres (9.84 feet), and how it happened to be in the area, TVR added.
Local authorities in southern Ukraine, meanwhile, said the Izmail port in the Odesa region came under attack from several drones in the early hours of Friday morning.
Izmail, close to the Romanian border, is home to the largest Ukrainian port on the Danube River and is a frequently targeted strategic location.
(Reporting by Jekaterīna Golubkova in Tokyo; Editing by Jacqueline Wong and Kate Mayberry)

Italy's Parachute Lieutenant General Lorenzo D'Addari (C), Commander of the Allied Reaction Force (ARF), delivers a speech after the NATO Exercise Steadfast Dart 25 at the Romanian camp in Smardan, near Galati, Romania, 19 February 2025. NATO's largest exercise of 2025 is taking place across Bulgaria, Romania and Greece from 10 to 21 February 2025, deploying approximately 10,000 military personnel from special operations forces, land forces, air forces and naval forces of 9 Allied countries. EPA/ROBERT GHEMENT