The four Arab states affirmed "working together with partners" around the world towards finding solutions to countering terrorist organizations and extremist groups, expressing unity in their ongoing commitment to combat terrorism, drying up its funding, countering extremist ideology and the ways of its promotion, according to the statement.
Officials from Qatar and its Gulf Arab neighbors embarked on a quickening round of shuttle diplomacy, with the Qatari foreign minister due in Moscow and Brussels and Bahrain's king visiting his ally Egypt for talks on the crisis.
Erdogan has said isolating Qatar would not resolve any problems.
Qatar's ambassador to Washington Meshal bin Hamad al-Thani told the Financial Times on Thursday that "his government trusted in Trump's ability to resolve the dispute and to bring this crisis to an end".
The UAE's national postal service, Emirates Post Group, suspended all postal services to Qatar, state news agency WAM said, the latest in a series of measures narrowing commercial and communications links with Doha.
The rift has provoked confusion and anxiety in Qatar, an energy, banking and construction hub, which is home to 2.7 million people - a lot of them foreigners. He said he hoped it would be the beginning of the end of funding terrorism.
Iran blamed arch-foe Saudi Arabia for the attack, which was claimed by the Islamic State militant group.More news: Gun debate under Trump tested by congressman's shooting
In the aftermath of Arab nations cut diplomatic ties with the State of Qatar, the Ministry of External Affairs of India on Saturday said it is closely monitoring the situation.
CNN reported, "the outreach came as US officials told CNN they were observing increased Qatari military activity as the country placed its forces on the highest state of alert over fears of a military incursion".
The news [VIDEO] broke out on Monday that the United Arab Emirates, Saudi Arabia, Egypt, and Bahrain had cut their relationships with Qatar due to an allegation that the country has been supporting extremism and terrorism in the region. Riyadh denied any involvement.
Jubeir declined to confirm a list of 10 demands published by Al Jazeera, which included shutting down the widely watched, Doha-based satellite network, but added that Qatar knew what it needed to do to restore normal relations. Tillerson has been tapped by Trump to help mediate the worst diplomatic crisis in the Gulf in years. It drew some support on Wednesday when Turkey's parliament approved a draft bill allowing its troops to be deployed to a military base in Qatar.
Slogans against and in support of Qatar in Arabic have dominated Twitter, which is hugely popular in the region, and have grown steadily more nationalistic and aggressive in tone.
Qatar's neighbors have also criticized Qatar for allegedly supporting groups like the Muslim Brotherhood and Hamas. Aircraft that fly out of Qatar - including fighter jets, drones and refueling planes - can be relocated to a number of other bases in the region including in Iraq, Turkey, Kuwait and Bahrain and off aircraft carriers, the officials said.