According to Fox News, flight data suggested a delivery was made earlier this week by a cargo plane which left Tehran on Tuesday and flew back Thursday, with stops in Syria, Lebanon and Qatar.
READ MORE: Hezbollah Leader Responds to Israeli Accusations of Building 'Missile Factory'
Intelligence sources told the news channel the plane carried GPS devices and other components needed to build precision weapons at Iranian factories in Lebanon, in addition to plants in Syria and Yemen.
Western powers and Israel have repeatedly accused Iran of arming Hezbollah, including by operating factories in densely populated Beirut. The militant group said it would not respond to every allegation coming from Israel.