Citing “increased terrorist threats” from militant groups in various regions of the world, the U.S. State Department issued a global alert on Monday for Americans planning to travel following deadly militant attacks in France and Mali.

As millions of Americans prepare to travel for the U.S. Thanksgiving holiday on Thursday, the agency said potential attackers could target private or government interests.

The department did not advise people against travel but said U.S. citizens should be vigilant, especially in crowded places.

The State Department has regularly issued such worldwide travel alerts since the Sept. 11, 2001, attacks on the United States. A State Department official said the latest alert, which expires Feb. 24, effectively updated past warnings.

In the statement on its website, the State Department said: “Current information suggests that (Islamic State), al-Qaeda, Boko Haram, and other terrorist groups continue to plan terrorist attacks in multiple regions.”

Although it did not mention the Nov. 13 Paris attacks claimed by the Islamic State group in which 130 died, the department noted that militants had carried out attacks in France, Nigeria, Denmark, Turkey, and Mali during the past year.

    “Authorities believe the likelihood of terror attacks will continue as members of (Islamic State) return from Syria and Iraq,” it said. ”Additionally, there is a continuing threat from unaffiliated persons planning attacks inspired by major terrorist organizations but conducted on an individual basis.”

France and Belgium have launched a manhunt following the attacks in Paris, with a focus on Brussels barkeeper Salah Abdeslam, 26, who returned to the city from Paris hours after the attacks and is still at large.

Abdeslam’s mobile phone was detected after the attacks in the 18th district in the north of Paris, near an abandoned car that he had rented, and then later in Chatillon in the south, a source close to the investigation said.

Detectives were examining what appeared to be an explosive belt found in a litter bin in the town of Montrouge, south of the capital and not far from Chatillon.

The source said it was too soon to say whether the belt had been in contact with Abdeslam, whose elder brother blew himself during the gun and suicide bomb attacks.

Read more at Reutershttp://www.reuters.com/article/2015/11/24/us-france-shooting-belgium-idUSKCN0TA03H20151124#7YCWAugKxLyGP5IR.99