"We are enhancing security measures and coordinating intelligence-sharing to proactively address potential risks," a DHS spokesperson told Newsweek.

Attacks perpetrated by lone actors are the biggest terrorism threat to July 4th festivities in New York City and elsewhere, federal authorities said in a threat assessment obtained by CNN.

Federal agencies have warned of a possible lone-wolf terror threat to July 4 celebrations, with the FBI calling such attackers the biggest risk to events like the Macy’s fireworks show in New York., U