Passengers traveling to the United States from certain countries will no longer be allowed to bring carry their laptops, tablets and other portable electronic devices with them on their flights, according to new rules set to go into effect Tuesday.

U.S. officials made no public announcement about the change and have declined to comment, but word of the ban was made public in a tweet from officials at Royal Jordanian Airlines on Monday. Two sources confirmed to The Washington Post that new restrictions will be put into place.

In the now-deleted tweet, officials with the airline said that starting Tuesday, passengers will no longer be able to bring certain portable electronic devices on board with them.

“Following instructions from certain concerned US departments, we kindly inform our dearest passengers departing to and arriving from the United States that carrying any electronic or electrical device on board the flight cabins is strictly prohibited,” the tweet read. It noted that cellphones and medical devices are excluded from the ban.

U.S. airlines, however, will not be affected by the ban, according to a U.S. airline official briefed on the matter.

State Department officials referred all inquires to the Transportation Security Administration. TSA officials referred all questions to the Department of Homeland Security, which said in an email that it would not comment on the report.

“We have no comment on potential security precautions, but will provide an update when appropriate,” DHS spokesman David Lapan said in an email.

A spokesman for the International Air Transport Association, which represents international carriers, including Royal Jordanian, said they were not informed of the ban and were working to get additional information from U.S. authorities.

We will update this report as we get more information.