CNN reporting
he Department of Homeland Security, the FBI and the National Counterterrorism Center issued a joint intelligence bulletin to law enforcement across the U.S.
The bulletin doesn’t warn of any known active plots. But it serves as a general warning of heightened threats. It says extremists could launch attacks tied to Independence Day or in reaction to perceived defamation of the Prophet Mohammed
http://www.cnn.com/2015/06/26/politics/july-4-terror-threats/index.html
