Analysis of information sources in references of the Wikipedia article "2019 Iranian shoot-down of American drone" in English language version.
Iran's Islamic Revolution Guards Corps (IRGC) said the aircraft had violated Iranian airspace, and that the incident sent a "clear message to America". But the US military insisted the drone had been over international waters at the time, and condemned what it called an "unprovoked attack" by the IRGC.
Iranian and U.S. officials have previously delivered conflicting reports identifying the drone as an RQ-4A Global Hawk or its naval variant, the MQ-4 Triton.