Iran's construction sector was blacklisted as it is controlled by the Islamic Revolutionary Guard Corps (IRGC), which was regarded by America as a terrorist organization, the U.S. State Department said in a statement.

Following the exit from the Iran nuclear deal The Trump administration has formerly imposed sanctions on many Iranian business companies and networks on the pretext of being tied to the Islamic Revolutionary Guard Corps (IRGC), after blacklisting it as a "terrorist" organization earlier this year.

At the same time, the U.S. State Department extended sanctions waivers on Thursday that permit foreign companies to work with Iran's civilian nuclear program without facing U.S. punishment. The waivers, which was due to expire on Tuesday, were extended for another 90 days.

ILKHA