Sudan has reportedly expelled its Iranian ambassador in protest to the attack on Saudi Arabia's embassy in Tehran.
The Tehran embassy was stormed by protesters on Sunday following Saudi Arabia's mass execution of 47 people, including a prominent Shia cleric.
News of the Iranian ambassador's expulsion was announced on Saudi state television on Monday as tensions continued to mount between the two countries.
Sudan's foreign ministry confirmed today that it has cut diplomatic ties with Iran.
The United Arab Emirates has announced that it will be downgrading its ties with Iran and cutting the number of Iranian diplomats it allows to be in the country, according to local media reports.
State news agency WAM said the government had also decided to reduce the number of UAE diplomats posted to Iran amid growing tensions between Iran and Saudi Arabia.
Germany is "not planning" on imposing sanctions against Saudi Arabia in the wake of the country's mass execution of 47 people including a Shia cleric, a top official confirmed today.
Ministry spokesman Martin Schaefer told a news conference that Germany opposed the death penalty but said he was "unaware of any government plans at the moment to impose sanctions for this reason."
Schaefer's comments came as the German government called on Saudi Arabia and Iran to engage in talks with each other after ties between the two countries started to disintegrate in the wake of protests over the executions.
Bahrain has announced it is "severing diplomatic ties" with Iran following the storming of the Saudi embassy in Tehran.
According to reports in state media Iranian diplomats have been told to leave Bahrain within 48 hours.
Russia is reportedly ready to act as an intermediary to help settle the dispute between Iran and Saudi Arabia after the two countries cut ties in the wake of growing tensions.
Russian news agency RIA, said a Foreign Ministry source said that "as friends" they "would be ready to play, if it is demanded, an intermediary role in ... settling the existing contradictions and any new ones that arise between these two countries."
The Russia's foreign ministry has also officially expressed "serious concern" about the worsening situation between the two countries and urged them both "to show restraint and avoid any steps that would complicate the situation".
Labour has raised questions over the government's ties with Saudi Arabia as tensions continue to escalate following the mass execution of 47 people at the weekend.
Shadow Minister for Human Rights Andy Slaughter wrote to Justice Secretary Michael Gove on Monday asking about the level of cooperation put in place between the two nations by a memorandum of understanding on judicial cooperation, signed in September 2014, and urging ties be cut.
Writing that he felt it "would be inappropriate at present for the UK to be seen to be cooperating with the Saudi justice system", Slaughter urged the government to "suspend any cooperation on judicial matters with Saudi Arabia in the light of the recent executions".
Crowds of people gathered for the funeral of executed Shia cleric Nimr al-Nimr on Sunday in his home town of Awamiya, in Saudi's Eastern Province
Al-Nimr was executed in Saudi Arabia on Saturday, along with 46 others, in relation to alleged 'terrorism' offences.
Video obtained by The Associated Press shows queues of people lining up to pay their respects to the prominent religious figure.
Evacuated Saudi nationals arrived in Dubai on Monday after leaving Iran amidst growing tensions between the two countries.
Saudi Arabia officially announced it had severed ties with Iran today in the wake of the storming of its embassy in Tehran following the kingdom's execution of a prominent Shia cleric.
A Saudi man has reportedly been shot dead in the home town of executed Shia cleric Nimr al-Nimr in what authorities are describing as a "terrorist" act.
According to the official Saudi Press Agency, Ali Imran al-Dawood was shot when security officers came under fire from an unidentified source in Awamiya town, Eastern Province on Sunday.
A police official told the press agency that an eight-year-old child had also been injured in the attack and was being treated in hospital for a gunshot wound.
Iran's foreign ministry has accused Saudi Arabia of using Sunday's attack on its embassy in Tehran as "an excuse to fuel tensions".
Speaking following the Saudi decision to sever ties with Iran over the storming of its embassy by protesters in the wake of the execution of a prominent Shia cleric, an Iranian ministry official said the incident had been used to continue to spur growing tension.
Ministry spokesman Hossein Jaberi Ansari said in televised remarks: "Iran... is committed to provide diplomatic security based on international conventions. But Saudi Arabia, which thrives on tensions, has used this incident as an excuse to fuel the tensions."