An Israeli missile strike on a building in Syria’s capital Damascus on Saturday killed four members of Iran’s Revolutionary Guards, Reuters has reported citing a security source within the regional pro-Syria alliance.

The security source, part of a network of groups close to Syria’s government and its major ally Iran, told Reuters that the multi-storey building was used by Iranian advisers supporting President Bashar al-Assad’s government, and that it was entirely flattened by “precision-targeted Israeli missiles”.

The Syrian Observatory for Human Rights claimed that at least five people were killed in the missile strike. The attack occurred during a meeting of officials from Iran-backed groups.

An official associated with an Iran-backed group in the Middle East, speaking to The Associated Press (AP), confirmed that the building was utilised by Iran’s Revolutionary Guard officials. The official added that the “Israeli missiles” completely destroyed the structure, resulting in 10 casualties.

The strike follows a similar incident last month when an Israeli airstrike in a Damascus suburb resulted in the death of Iranian general Seyed Razi Mousavi.