The reports could embarrass the Russian government.

Russian cruise missiles aimed at Syria reportedly landed in Iran on Thursday.
The mistaken bombing, launched from a Russian warship in the Caspian Sea, was first reported by CNN, which received the information from two unnamed U.S. officials.
From the Caspian Sea, the clearest path for the missiles to reach Syria would be by crossing over both Iran and Iraq. The officials told CNN that Russia is testing out its Kaliber missiles in combat for the first time.
The report is consistent with Iranian media accounts of an explosion in northwestern Iran. The Islamic Republic Press Agency, an official Iranian government press outlet, reported on Thursday that the governor of Takab said an "unidentified flying object" near the town crashed and then exploded. The article contained a photo of a drone, however, and did not provide details about the origins of the crash and explosion.
Iranian journalists have subsequently tweeted these government reports as evidence that that is where the bombing occurred.
It is not clear if there were any Iranian casualties from the bombing.
Edited by
alleoops
on Thu 10/08/15 09:46 PM