“Federal authorities have warned local law enforcement officials across the country about a heightened concern involving possible terror attacks targeting the July 4th holiday, a U.S. law enforcement official said.
While there was no specific or credible threat of attack, the official said the intelligence bulletin prepared by the Department of Homeland Security and the FBI alerted local colleagues to the ongoing threats posed by the Islamic State and other homegrown extremists. The official was not authorized to comment publicly.”
Source: Fourth of July terror warning issued by FBI, Homeland Security