A spokesman for Iran's foreign ministry warned that the United States would be responsible for any possible incident for a passenger plane en route to Tehran.

Iran PressIran News: Seyed Abbas Mousavi, referring to the incident for the Mahan plane bound for Beirut, said: "The details of the incident are under investigation and after completing the information, the necessary political and legal measures will be taken."

He added: "At the same time, Iran's ambassador and permanent representative to the United Nations Majid Takht-e Ravanchi, contacted Guterres, the secretary-general of the organization, and explicitly stressed that if any incident occurs on the way back for the airliner, the Islamic Republic of Iran will hold the United States responsible." 

Mousavi added that the message was also given to the Swiss ambassador in Tehran.