Iran has rejected video of the shootings on protesters circulating on social media, saying that they did not shoot at protesters protesting the plane crash.
Tensions between Iran and the United States reached a critical juncture in history after 1979, where the tensions between the two countries began to wane over the region.
Iran fired 20 missiles at US military bases in retaliation after the assassination of General Qasim Sulaimani in the US attack, but no casualties were confirmed.
However, a Ukrainian passenger plane flying from Iran's Imam Khomeini International Airport collapsed in Iran just minutes after the flight, which the international community accused Iran of destroying.
The allegations were initially denied by Iran, but after unconfirmed evidence surfaced, Iran admitted its error.