The FBI has pushed its use of social media like into new territory to help protect Americans from those who break the law.

A Palm Beach County man was thwarted in carrying out racially-motivated mass shootings and attacks on law enforcement that ...

A 22-year-old man who allegedly stockpiled weapons, ammunition and gear with the intent to carry out threats of mass violence ...

"This guy was ready to go, had all these weapons, had the propensity to do it -- it was just a matter of what day was going ...

A senior Cook County Sheriff’s Office investigator has filed a lawsuit claiming she was illegally retaliated against after ...

A man posing as a sheriff's deputy shared graphic fantasies of violence with a teenager who later killed two at her high ...

The US Attorney's Office for Minnesota says Trooper Jeremy Francis Plonski was formally charged today with one count of ...

A Minnesota State Patrol trooper has been charged with production of child pornography, the state’s U.S. Attorney Office’s ...

A Jicarilla Apache police officer could spend the rest of her life in prison after allegations surfaced that she raped and physically abused underage relatives. Lory Muniz, 48, of Dulce, is facing ...

A man posing as a sheriff's deputy shared violent fantasies with Natalie Rupnow, who killed two at her Madison school, Florida authorities say.

Authorities say Damien Allen had 18 guns, 300 pounds of ammo, and police uniforms — and was in contact with a teen who carried out a deadly school shooting.