ISIS militants left Syria to arrive in France and Belgium to stage attacks, Belgian officials disclosed

La Derniere Heure, or “The Last Hour,” reported other details, which have not been confirmed, including that a Brussels shopping mall, a U.S. fast-food chain and police stations were among the targets.

“The information published in la Derniere Heure is one among many others that we have been aware of in the past few weeks,” a spokesman at Belgium’s Crisis Center (part of the Interior Ministry) told ABC News. ”This information needs to be contextualized.”

“We had received and analyzed this information and as a result we determined it was not necessary to raise the threat level. There is no imminent threat in Belgium today,” the spokesman added.

The threat level remains high in Belgium, at 3 out of 4, which means it is serious, possible and probable.

The spokesman declined to comment on the details of the report, which he says were leaked from an internal police note.

French authorities also remain cautious about the information because they receive such notes routinely, an official told The Associated Press, speaking on condition of anonymity to be able to discuss sensitive security information.