Iran has accused the Saudi-led coalition battling Shi'ite rebels in Yemen of attacking its embassy in the capital, Sanaa, but there were no signs of damage on the building.
The accusation comes amid a dangerous rise in tensions between Iran and Saudi Arabia in recent days, following the kingdom's execution of a Shi'ite cleric and attacks on Saudi diplomatic posts in the Islamic Republic.
Analysts have feared the dispute could boil over into the proxy wars between the two Mideast rivals in Yemen and in Syria.
Meanwhile, Saudi Arabia's eastern Shi'ite heartland prepared to hold a funeral service Thursday night to honour the executed Shi'ite cleric, Nimr al-Nimr.
That could spark further unrest, as witnesses in eastern Saudi towns have reported hearing gunfire overnight and armoured personnel carriers have been seen driving through neighbourhood streets.
On Thursday afternoon, Iran's state-run news agency said a Saudi-led airstrike the previous night hit the Iranian embassy in Sanaa, citing Iran's Foreign Ministry spokesman.
However, an Associated Press reporter who reached the site just after the announcement saw no visible damage to the building.
Saudi officials could not immediately be reached for comment.
The diplomatic standoff between Iran and Saudi Arabia began on Saturday when the kingdom executed al-Nimr and 46 others convicted of terror charges - the largest mass execution it has carried out since 1980.
Al-Nimr was a staunch critic of the Saudi government and demanded greater rights for the kingdom's Shi'ite population, but always denied advocating violence.
Saudi Arabia and its allies say al-Nimr was found guilty of terrorism charges, and that condemnation of the execution amounts to meddling in Riyadh's internal affairs.
Iranian protesters responded by attacking the Saudi Embassy in Tehran and its consulate in Mashhad.
Late on Sunday, Saudi Arabia announced it was severing relations with Iran because of the assaults, and a host of its allies have since cut or reduced their ties as well.
On Thursday, Somalia joined Saudi allies such as Bahrain and Sudan and entirely cut diplomatic ties with Iran.
The Somali Foreign Ministry said it recalled its acting ambassador to Tehran and ordered Iranian diplomats to leave Somalia within 72 hours.
In eastern Saudi Arabia, the home of al-Nimr and much of the kingdom's roughly 10 to 15 per cent Shi'ite population, three days of mourning over his death ended Wednesday night.
Mohammed al-Nimr, the sheikh's brother, said people planned to hold a funeral on Thursday for the cleric, though Saudi authorities already buried his corpse in an undisclosed cemetery.
There are concerns new unrest could erupt. Al-Nimr's brother, as well as another local resident of al-Awamiya in eastern Saudi Arabia, said they've heard gunfire on recent nights.
The local resident, who spoke on condition of anonymity out of fear for her safety, shared a mobile phone video showing Saudi armoured personnel carriers travelling through local streets.
