A model of the Safir (Ambassador) rocket, which carried Iran's Omid (Hope) satellite into space, is seen during a ceremony to mark the 30th anniversary of Iran's 1979 Islamic Revolution in Tehran's Azadi (Freedom) Square. - File photo.

TEHRAN Iran is building seven new satellites, including three for high orbit positions, the communications minister said, a week after Iran launched its first satellite amid international concerns.

'Four low-orbit satellites weighing less than 100 kilograms are under design and construction,' Mohammad Soleymani was quoted as saying by the state broadcaster's website.

The other three will be high orbit spacecraft and all seven are being built by Iranian scientists, he said.

On February 2, Iran sent its first home-built Omid (Hope) satellite into space, carried by a Safir-2 rocket.

Hard-line President Mahmoud Ahmadinejad said the launch of the satellite signaled Tehran's technological achievement and was an attempt to break the Western world's monopoly on science.

The West reacted strongly to the satellite launch, saying the technology could be diverted into developing long-range ballistic missiles capable of carrying nuclear warheads.

Iran denies seeking atomic weapons, insisting it's nuclear and space programmes have peaceful aims.