Fifteen Americans have been quarantined in a hotel in Bethlehem as part of precautions against the coronavirus, a Palestinian government spokesman said on Saturday.
The city in the occupied West Bank has been in lockdown since cases of the virus were recorded there on Thursday.
Some of the first cases there were reported among staff at the Angel Hotel.
On Saturday, spokesman Ibrahim Melhem said a group of American visitors were in isolation in the building, without going into further details on their condition.
An official from the US embassy in Jerusalem said it was aware of the reports. "Due to privacy considerations, we have no further details to share," she added.
Palestinian security forces wearing masks and gloves were stationed around the hotel on Saturday, as they have been since the first cases were announced.
"There is a 15-member American delegation in the hotel. They are still there and they are being dealt with according to quarantine regulations like all the others who are there,” Melhem told Reuters.
Authorities have put restrictions on travel in and out of the city and turned away tourist buses. They have also closed the Church of the Nativity and shut schools.
The emergency measures came after the first Palestinian cases were confirmed Thursday afternoon.
The seven people initially found to be infected were being treated in quarantine, the Palestinian health ministry had said.
The head of the local health directorate, Imad Shahadeh, told AFP that a group of Greek tourists had visited the hotel in late February, with two later diagnosed with the virus.
A number of suspected cases have since been identified among hotel workers, he said.