"Recent, widely reported incidents in France, Russia, Sweden, the United Kingdom, Spain, and Finland demonstrate that the [Daesh]… al-Qaeda and their affiliates have the ability to plan and execute terrorist attacks in Europe," the alert stated on Thursday.
The message advised Americans traveling between countries in Europe to check US embassy and consulate websites for security updates and to monitor local media, Sputnik reported.
"Terrorists persist in employing a variety of tactics, including firearms, explosives, using vehicles as ramming devices, and sharp-edged weapons that are difficult to detect prior to an attack," the advisory said.
The travel alert expires on November 30, 2017.