Commander of Khatam ol-Anbia Air Defense Base Brigadier General Farzad Esmayeeli announced that a US U-2 stealth aircraft was alarmed to stay away from the country's borders.
"In the past few days, our forces at Khatam ol-Anbia Air Defense Base warned a US U-2 spy plane which sought to violate Iran's airspace and it was forced to change its direction," General Esmayeeli said addressing a gathering near Tehran on Saturday.
Stressing that the Air Defense forces care for safeguarding the country's borders rather than diplomatic considerations, he said that even the European officials should take permission for flying over the Iranian airspace.
Lieutenant Commander of Khatam ol-Anbia Air Defense Base Brigadier General Alireza Sabahifard had announced in 2014 that Iran's powerful radar systems are capable of tracing the U-2 stealth aircrafts.
"Using the indigenized radars built by the young scientists and experts of Khatam ol-Anbia Air Defense Base, we can monitor all enemy moves even beyond the borders well and give the needed response if necessary," Sabahifard said at the time.
Noting that the country's air defense units have alarmed several reconnaissance and surveillance planes, including some U-2 stealth aircraft, to stay away from Iran's borders, he said, "Warning the radar-evading U-2 aircraft shows that this type of airplane can be easily discovered and traced by our radars."
In a relevant development in August, Iran's Khatam ol-Anbia Air Defense Base warded off a US radar-evading spy drone after approaching the country's bordering areas from Afghanistan.
The drone which intended to pass through Iran's borders for espionage operations was dissuaded from accomplishing its mission after Khatam ol-Anbia Air Defense Base gave it a serious warning.
The Unmanned Aerial Vehicle (UAV) had taken off from a US base in Kandahar and had advanced to areas 20 miles off the Iranian borders when it was alarmed.
Iran has downed many US drones and they have always started reproducing them immediately after conducting reverse engineering.
The Iranian version of the RQ-170 drone was manufactured through reverse engineering of the US drone, which was tracked and hunted down in Iran late in 2011, and has been equipped by the Islamic Revolution Guards Corps (IRGC) with bombing capability.
Back in October 2013, Commander of the IRGC Aerospace Force Brigadier General Amir Ali Hajizadeh said Iran moved as much as 35 years ahead in building drone engines by reverse engineering of the US drone.
The RQ-170 engines are the fifth generation and the engines of Iranian unmanned planes are the third generation, Hajizadeh said.