TOKYO — The United States Department of Homeland Security has raised the terrorism threat level to red, its highest level, for all flights departing airports in the United Kingdom and bound for the U.S., the AP reports.

The remainder of commercial aviation has been elevated to the orange, or “high” risk, level.

A statement from DHS includes additional information on prohibited items.

“Due to the nature of the threat revealed by this investigation, we are prohibiting any liquids, including beverages, hair gels, and lotions from being carried on the airplane. This determination will be constantly evaluated and updated when circumstances warrant. These changes will take effect at 4:00 AM local time across the country.”

The change follows the uncovering of a bomb plot in the United Kingdom.

DHS plans an 8 AM EDT press conference to discuss the threat level change. In the mean time, the press release indicates there is no imminent threat domestically.

“Currently, there is no indication, however, of plotting within the United States. We believe that these arrests have significantly disrupted the threat, but we cannot be sure that the threat has been entirely eliminated or the plot completely thwarted.”