Iran on Thursday ended its large-scale military exercises by testing firing a 2000-pound guided bomb, state-run television reported.
"It is a flying bomb and can be used as a guided long-range air-to-surface missile," Gen. Amir Amini, deputy commander of Iran's air force, told state TV.
Amini added that the bomb was a special weapon developed for penetrating military, economic and strategic targets located deep underground on the soil of the enemy.
Gen Amini said the bomb has an "exceptional" explosive power against its targets either on the ground or in the sea.
The bomb, named Qassed or Herald, was shown in a televised picture in white, yellow, red and green colours.
Iran has conducted a major military build-up, concerned about the US military presence in neighbouring Iraq and Afghanistan at a time when the international community has threatened to impose sanctions against Tehran because of its disputed nuclear program.
During manoeuvres dubbed "The Blow of Zolfaghar," which began on August 19, Iran has test fired short range surface-to-surface and sub-to-surface missiles, a new air defence system, fighter planes and laser bombs.