The Ukrainian navy has said the sea drone that exploded in the Romanian port city of Constanta on Friday morning had veered off course due to Russian electronic interference.
"While carrying out missions in the Black Sea operational zone, one of the Ukrainian Navy’s unmanned surface vessels lost control due to enemy electronic warfare measures and drifted toward the coast of Romania," the Ukrainian navy said in a statement, adding that it had "provided the necessary information to the Romanian Navy to prevent civilian casualties".