Iran has accused Saudi warplanes of attacking the Iranian embassy in Sana’a, the capital of Yemen. Some guards were wounded in the attack, the Guardian reports citing state TV.

“Saudi Arabia is responsible for the damage to the embassy building and the injury to some of its staff,” foreign ministry spokesman Hossein Jaber Ansari was quoted as saying by state television news channel IRIB.

A spokesman from the Saudi-led coalition said it was investigating the claims.

The claims come as relations between Iran and Saudi Arabia grow increasingly fractious, with several Saudi allies having cut or downgraded diplomatic ties with Tehran in the last few days.

Iran’s government on Thursday, January 7, banned all imports of products made in Saudi Arabia, according to student news agency ISNA. The decision was made in a cabinet meeting chaired by president Hassan Rouhani, it said.

The diplomatic crisis followed the storming of the Saudi embassy in Tehran by protesters angry at Saudi Arabia’s execution of Sheikh Nimr al-Nimr, a Shia cleric.