Its probably just a mistake by a sub-editor on the news report
Tehran Times is now also reporting it, but with a correct (stock) photo
Iran shoots down U.S. spy drone: reports - Tehran Times
They add the comment
"The cyber warfare unit managed to take over controls of the drone and bring it down, a military official said, according to the TV."
Notice they are being very careful to
indirectly quote the military and so hedge around the issue of truth