Iran attacked ship navigation systems on the Omani island of Didamar in the Strait of Hormuz, three sources with knowledge of the matter confirmed to Reuters.

The sources did not provide a damage assessment, and Reuters could not determine independently whether any navigation system was destroyed in the attacks Tehran claimed on Tuesday. Iranian state media said the Islamic Revolutionary Guard Corps destroyed “enemy navigation systems” on Didamar; Reuters confirmed smoke rising from the island in video footage but it was unclear what was burning. Two other shipping sources and an additional maritime security source said the attack would likely have limited impact on commercial traffic in the strait, because other systems are in place elsewhere.