Nationals of countries that cut diplomatic ties with Qatar this week are free to remain in the Gulf state in line with existing regulations.

Iran has sent four cargo planes of food to Qatar and plans to provide 100 tonnes of fruit and vegetable every day, Iranian officials said, amid concerns of shortages after Qatar's biggest suppliers severed ties with the import-dependent country.

Iraq still has hundreds of millions of dollars sent by Qatar to secure the release in April of members of the Qatari ruling family abducted in 2015, Iraq's prime minister said on Sunday.

Turkish President Tayyip Erdogan told Bahrain's Foreign Minister that the dispute between Qatar and other Arab states should be resolved by the end of the holy month of Ramadan, Turkish Foreign Minister Mevlut Cavusoglu said on Saturday.

Russian foreign minister Sergei Lavrov told Qatar on Saturday of its concern over Arab nations cutting ties with the Gulf state and called for talks to solve the crisis.

The dispute between Qatar and other Arab states could lead to war, German Foreign Minister Sigmar Gabriel told a newspaper on Saturday, adding that he still saw a chance to defuse the tension.

Saudi Arabia and Bahrain welcomed on Saturday U.S. President Donald Trump's demand for Qatar to stop supporting terrorism, but did not respond to a U.S. Department of State call for them to ease pressure on the Gulf state.

Amnesty International warned Saturday of the "heartbreak and fear" being suffered by potentially thousands of ordinary individuals because of the political dispute in the Gulf that has isolated Qatar.

Central Bank of the United Arab Emirates issued Friday two notices to order banks in the UAE on transactions with Qatari banks to freeze accounts related to an issued "terrorism" list.

The ostracism of Qatar by other powerful Arab states is deepening divisions between their respective allies vying for influence in wars and political struggles from Libya to Yemen.

Bahrain's minister of justice threatened legal action against any political organisation found communicating or expressing support for the people named in a new Qatar-linked blacklist.

Bahrain's foreign minister will visit Turkey on Saturday and meet with Turkish President Tayyip Erdogan to discuss recent developments in the region, the Turkish foreign ministry said.

Niger said on Saturday it had recalled its ambassador to Qatar in solidarity with Arab countries that have cut ties with Doha over allegations it sponsors Islamist militants and Iran.

In his first comment on his dismissal decision, Bahrain News Agency (BNA) Director-General Mohannad Sulaiman (Bahraini national of Jordanian roots) said that "professional life is stages, and every stage has an end".

Saudi Arabia, the United Arab Emirates, Egypt and Bahrain branded as terrorists 59 people, including president of the World Federation of Muslim Scholars Yusuf Al-Qaradawi.

A joint statement issued by the Kingdom of Saudi Arabia, the Arab Republic of Egypt, the United Arab Emirates and the Kingdom of Bahrain listed 59 individuals and 12 entities as banned terrorists. They said that all the members and entities are either hosted or supported by Qatar.

The Qatari crisis led to the dismissal of Bahrain News Agency (BNA) Director-General Mohannad Sulaiman (Bahraini national of Jordanian roots) due to contacting Qatari parties before officially announcing the decision.

Bahrain's foreign minister, keeping up the pressure on Qatar in a deepening Arab row, reiterated on Thursday a demand that Doha distance itself from Iran and stop support for "terrorist organizations".

One of the first signs of the crisis in which four Arab states have cut ties with Qatar came in a phone call from an anxious government adviser to a Reuters journalist early on May 24.

Qatar's leader will not accept an invitation from U.S. President Donald Trump to attend mediation talks in Washington on a row in the region while the country remains cut off from its neighbors, a Qatari official said on Thursday.