Threat: Toothpaste Bomb

The Department of Homeland Security has issued a warning to U.S. and some foreign airlines traveling to Russia for the Olympic Games to be on the lookout for toothpaste containers, which some intelligence indicates may actually hold ingredients that could be used to construct a bomb aboard a plane, a senior U.S. official told ABC News.

The official did not provide further details about the warning or the intelligence that prompted it, but a spokesperson for the Department of Homeland Security, while declining to discuss the specific warning, said the department “regularly shares relevant information with domestic and international partners, including those associated with international events such as the Sochi Olympics.”

“While we are not aware of a specific threat to the homeland at this time, this routine communication is an important part of our commitment to making sure we meet that priority,” the spokesperson said. “As always, our security apparatus includes a number of measures, both seen and unseen, and DHS will continue to adjust security measures to fit an ever evolving threat environment.”