Bangladesh has condemned the recent attacks on Saudi embassy in Tehran and its consulate in Mashhad, saying such acts are in clear violation of the Vienna Convention.

"Bangladesh condemns the recent attacks on the Embassy of the Kingdom of Saudi Arabia in Tehran and its consulate in Mashhad, as such acts are in clear violation of the Vienna Convention on Diplomatic Relations, 1961 and the Vienna Convention on Consular Relations, 1963," a foreign ministry statement said here on Tuesday.

The statement said Bangladesh also calls upon the Islamic Republic of Iran to take urgent necessary measures to stop recurrence of such incidents.

"It is the responsibility of the host government to accord necessary protection to the diplomatic and consular missions within its jurisdiction as these are inviolable under the international law," it said.

On Saturday, a mob attacked the Saudi embassy in Tehran and a consulate in the second city of Mashhad amid protests at the execution of Shiite cleric Nimr al-Nimr.

Saudi Arabia broke off diplomatic ties with Iran on Sunday after the incident.

Saudi Foreign Minister Adel al-Jubeir made the announcement at a news conference in Riyadh, and said Iranian diplomats had 48 hours to leave the kingdom.

Nimr, 56, was a force behind 2011 anti-government protests in oil-rich eastern Saudi Arabia, where Shiites have long complained of marginalisation.

He was put to death along with 46 other people, including Shiite activists and convicted Sunni militants who the Saudi interior ministry says were involved in Al-Qaeda attacks that killed dozens in 2003 and 2004.