ITV, Iran has paraded six of its newly-deployed medium-range missiles amid concerns over its nuclear capabilities.
Military analysts have said the Shahab-3 ballistic missiles could reach Israel or US bases in the Gulf.
Iran has denied seeking nuclear weapons or having aggressive military intentions and says the weapon is meant solely as a deterrent to the Islamic Republic's enemies.
Based on the North Korean Nodong-1 and modified with Russian technology, the Shahab-3 is thought to have a range of 810 miles.
However, the announcer at a military parade in southwestern Tehran attended by senior political figures and military top brass said the missiles had a range of around 1,000 miles.
Earlier this month, the Governing Board of the UN's nuclear watchdog gave Iran until the end of October to dispel doubts that its stated policy of developing nuclear energy is not a cover for building weapons of mass destruction.
Iran's government blames Israel and the US for creating doubts about its nuclear ambitions and has said it has no intention of following North Korea's example of pulling out of the nuclear Non-Proliferation Treaty.
