"The British government is duty-bound to seriously and decisively fulfill its responsibility to protect the Islamic Republic of Iran's diplomats and diplomatic centers and immediately arrest and prosecute those who have trespassed the diplomatic sanctuary," the spokesman reiterated.
A number of attackers scaled the wall of Iran's embassy building in London and took down the Iranian flag.
Iran's Ambassador to Britain Hamid Baeedinejad confirmed the reports on the embassy attack minutes ago.
"A few followers of Shirazi have attacked the Islamic Republic of Iran's Embassy in London and broke the flag mast," the ambassador tweeted minutes ago.
He further confirmed that the raiders were carrying "sticks and machetes", and said Police are deployed on the scene.
The Shirazi sect that has been labeled as "British Shiism" by the Iranian Supreme Leader operates mainly from London. The sect also runs a satellite network called 'Fadak' from London and promotes Shiite extremism against Sunni Islam. The sect is also known to be the religious opposition of the Islamic Republic.
Immediately after receiving news of the assault on Friday, Iranian Deputy Foreign Minister for Political Affairs Abbas Araqchi voiced Tehran's strong protest to Britain's ambassador to Tehran, he added.
Araqchi called on British police to fully protect the Iranian diplomats in London, the spokesperson said.
The British ambassador, for his part, offered the British government's apology for the incident and said anti-riot police is present in the embassy compound and has brought the situation under control, Qassemi added.
He emphasized that all necessary measures have been adopted to protect the Iranian diplomats and prevent the assailants' entry into the embassy building.
