The United States faces its highest threat from Islamist terrorists since 9/11 and much of that stems from those radicalized at home, according to the House Homeland Security Committee’s December Terror Threat Snapshot released Tuesday.

What’s more, the report said, the threat to the United States and Europe will persist in 2017.

Throughout 2016, ISIS conducted 62 attacks worldwide, injuring 732 people and killing 215 in several countries, including the United States, France, and Belgium.

An overseas tip about an imminent bombing of the Metro Red Line’s Universal City station has forced federal and local law enforcement in Los Angeles to swiftly ramp up security across its sprawling transit system, authorities said Monday.

An anonymous man warned of a potential attack on Tuesday and provided the information on a tip line abroad, according to Deidre Fike, the assistant director in charge of the FBI's office in Los Angeles.

The House of Representatives today approved the RESPONSE Act of 2016 (S. 546), a bill to enhance emergency responder training for incidents involving hazardous materials rail transportation.

“Rail safety is critical to the transport of goods and services through our country,” said U.S. Rep. Jeff Denham (R-CA), Chairman of the Railroads, Pipelines, and Hazardous Materials Subcommittee. “I believe the RESPONSE Act will succeed in improving the safety of our nation’s rail network.”

Fentanyl is a powerful synthetic drug that is similar to morphine and heroin but is 50 to 100 times more potent. Fentanyl and its analogs are members of the class of drugs known as rapid-acting synthetic opioids that alleviate pain. Other drugs in this class include fentanyl analogs, such as acetylfentanyl, butyrfentanyl, carfentanil, alfentanil, sufentanil and remifentanil. Fentanyl acts quickly to depress central nervous system and respiratory function. Exposure to fentanyl may be fatal.

Fox News chief intelligence correspondent Catherine Herridge reported this afternoon on a new DHS terror warning to local police departments.

Herridge explained that the four-page DHS intelligence note was sent out to federal, state and local authorities after an ISIS propaganda magazine called for mass casualty attacks using trucks as weapons.

The DHS warning comes after a July attack in which an ISIS-inspired terrorist drove a truck through a crowd in Nice, France, killing 86 people and injuring 400, including many children.