Iran test-fired on Monday a missile, state television reported.
It said the surface-to-surface Shahab 3 missile was tested during missile manoeuvres by the elite Revolutionary Guards that got under way on Sunday. Iranian officials have said the Shahab 3, which was last tested in mid-2008, can travel about 2,000 km.
State broadcaster IRIB said "upgraded" versions of Shahab 3 and another missile, Sejil, had been tested. Officials have earlier said Sejil has a range of close to 2,000 km (1,250 miles). They were powered by solid fuel, IRIB said.
Press TV estimated the range of the Shahab 3, which was last tested in 2008, at between 1,300 km and 2,000 km, without making clear the range of the actual missile tested on Monday.
State television said Iran test-fired Shahab-1 and Shahab-2 missiles overnight, following tests of short-range missiles early Sunday. The Shahab-1 and Shahab-2 have ranges of about 185 miles (300 kilometers) and 435 miles (700 kilometers) respectively.
Iran's English language Press TV said the Shahab 3, a surface-to-surface missile, was "successfully" test-fired on the second day of an exercise that got under way on Sunday, when short and medium-range missiles were launched.
"All targets within the region, no matter where they are, will be within the range of these missiles," General Hossein Salami, commander of the Guards' air force, said according to Guards website.
Iran's Foreign Ministry said there was no link between the missile maneuvers and the country's nuclear activities. "This is a military drill which is deterrent in nature," spokesman Hassan Qashqavi told a news conference broadcast by Press TV. "There is no connection whatsoever with the nuclear programme."
Israel has threatned to strike Iran's nuclear facilities, claiming Shi'ite State tries to provide nuclear weapon.
Iran has said it would respond to any attack by targeting U.S. interests in the region and Israel, as well as closing the Strait of Hormuz, a vital route for world oil supplies.
Russia's missile alert network monitored the Iranian missile test launches, former Strategic Rocket Forces' army commander Lt. Gen. Nikolai Rodionov was quoted by Interfax as saying.
"The intermediate-range missiles fired on Sunday could penetrate into Russia's territory, up to Saratov," he said, referring to a town in southern Russia.