The Group of Seven industrialized countries has warned Iran against providing ballistic missiles and related technology to Russia, for use in its conflict with Ukraine.

G7 leaders in a statement on Friday said they are "extremely concerned about reports that Iran is considering transferring ballistic missiles and related technology to Russia."

The Western nations have accused Tehran of providing Moscow with drones.

Last month, a senior US government official said Russia's negotiations to acquire ballistic missiles from Iran had been actively advancing.

The G7 statement warns Iran against such moves, saying they would "add to regional destabilization."

The statement says, "Were Iran to proceed with providing ballistic missiles or related technology to Russia, we are prepared to respond swiftly and in a coordinated manner."

Russia is suspected of using ballistic missiles from North Korea in its military assault on Ukraine.