The area around Iran's Bushehr nuclear power plant has been attacked for the fourth time during the current war, Iranian officials say, as the US and Israel continue to target energy and other industrial sites. One of the plant's employees was killed in the attack, Iran's Atomic Energy Organisation said. It blamed the US and Israel for the attack, but neither country has confirmed carrying it out. Bushehr is Iran's only operational nuclear power plant and was completed with Russia's help. The International Atomic Energy Agency - the UN's nuclear watchdog - said it had been informed of the strike and had expressed 'deep concern'. 'No increase in radiation levels was reported,' it wrote on X. It said nuclear power plant sites and nearby areas 'must never be attacked' and called for 'maximum military restraint' to avoid a nuclear accident. Meanwhile, Iran has continued to fire missiles at the Gulf States, Iraq, and Israel, with falling debris from intercepted missiles causing damage. The Iranian statement on the Bushehr attack said the main parts of the plant did not appear to be damaged and its operation was 'not affected'. Moscow has evacuated many of its staff from the plant as tensions escalate.