Oman will ban travel between all its governorates from July 25 to August 8 following a spike in coronavirus cases.
That's according to state news agency ONA, which described the measure as a "total lockdown" of all governorates.
The Gulf state will also implement a daily curfew between 7:00 pm and 6:00 am during the period.
Shops and public spaces will be closed during the curfew.
Oman recorded 1,458 new cases of infection on Tuesday and 11 deaths, taking the total tally to 69,887 cases and 337 deaths.
Oman introduced lockdowns in March in some regions such as Muscat, Dhofar, Duqm and some tourist towns. Since April, it has gradually allowed commercial centres to reopen and lifted the lockdown in the Muscat region.
Air and land borders have been closed, except for repatriation. Last week, the government said it would start allowing citizens to fly abroad after applying for permission.
France, Spain, Bahrain, and India have condemned the Iranian attack that targeted Qatar's Ras Laffan Industrial City during separate phone calls with Qatar's Emir Sheikh Tamim bin Hamad Al Thani.
Iran no longer has the capacity to enrich uranium or make ballistic missiles after 20 days of US-Israeli air attacks, Israeli Prime Minister Benjamin Netanyahu told a news conference on Thursday.
The US objectives in its war against Iran have not changed since strikes started on February 28, Defence Secretary Pete Hegseth said on Thursday, and he accused the media of stirring up concerns that the country risked being locked in an open-ended conflict with shifting priorities.
US President Donald Trump said an angry Israel "violently lashed out" and attacked Iran's major gas field, a significant escalation in the US-Israeli war, but ruled out further such attacks by Israel unless Iran retaliated further.
US President Donald Trump greeted Japan's Prime Minister Sanae Takaichi warmly at the White House on Thursday and said he believed Japan was "really stepping up to the plate" on Iran.