DUBAI: Iran's Supreme Leader Ayatollah Ali Khamenei on Wednesday condemned the attack on the Saudi embassy in Tehran this month, saying it was “really bad”.

Read: Iran seeks to limit fallout of Saudi embassy attack

In remarks published on his website, he also thanked Revolutionary Guards for detaining a group of US sailors in the Gulf last week, adding they had done the right thing.

Iranian protesters stormed the Saudi Embassy in Tehran early on January 3 as the country reacted with fury to Saudi Arabia's execution of a prominent Shia cleric, Nimr al-Nimr.

Saudi Arabia, its fellow-Sunni Bahrain and other allies severed ties with Iran following the attack on the embassy in Tehran.

Also read: Saudis, Iran stand firm; big powers for restraint

The development came two weeks before Iran emerged from years of economic isolation when world powers lifted crippling sanctions against the Islamic Republic in return for Tehran complying with a deal to curb its nuclear ambitions.