Two suspected drones in as many days have breached Romanian national airspace — igniting concerns of a “cyber challenge,” the defense ministry said Saturday. Romania’s army radars detected the first small flying object headed for the coastal city of Constanta Thursday night before losing the signal, Romanian Prime Minister Marcel Ciolacu said.

The drone crossed into Romanian airspace at around 4 a.m. local time in the Gura Portiţei area but the combat aircraft did not have visual contact with the target at any point, and the radar signal was lost half an hour later, south of Cogealac, News.ro reported, according to a translation.

Romania has scrambled fighter jets for the second time this week after an unidentified object breached its airspace by the Black Sea

An unidentified flying object was detected by Romanian radar systems near the Black Sea during Russia's overnight attack on Ukraine on Oct. 19, the Romanian Defense Ministry said. It is the second time this week that Romanian airspace has been violated,

Romania has scrambled four of its fighter jets after an unidentified object breached its airspace in the country’s southeast near the Black Sea, according to Ministry of National Defense. Officials said the small object,

For the second time in a week, Romania raised fighter jets when an unidentified object entered its airspace over the Black Sea. The incident involved Spanish and Romanian aircraft responding to the intrusion but losing radar contact with the object.