Media reports quickly spread with rumors that the U.S. was about to announce a new set of security rules targeted at airlines flying routes between the USA and some African and Middle Eastern countries.
The ban would involve devices larger than mobile phones.
In a notice that appears to be prompted by federal US officials, Royal Jordanian Airlines issued a new ban on electronic devices on planes Monday.
A screenshot of a now deleted tweet from Royal Jordanian Airlines outlining new restrictions on portable electronic devices. If electronic devices couldn't be turned on, they weren't allowed in the cabin.
A US official told CNN the directive would be for a limited duration, applies to some Middle Eastern and African countries, and is meant to ensure extra security measures at specific airports. It is not clear whether airline staff are also covered by these new restrictions.
The airline said that laptops, tablets, DVD players and electronic games must be checked with baggage.
Meanwhile people are responding to the Royal Jordanian post and seem super frustrated with the sudden rule change.
A spokesman for the U.S. Department of Homeland Security, David Lapan, said the agency has "no comment on potential security precautions, but will provide an update when appropriate". Of a dozen foreign airlines contacted Monday afternoon, Royal Jordanian was the only one to publicly detail such a prohibition on electronics.
The airline serves New York's John F. Kennedy International Airport, Chicago's O'Hare International Airport, as well Montreal and Detroit.
The new rules were laid out in an e-mail sent to airlines today by the US Transportation Safety Administration.