The Stanislaus County Sheriff's Detectives seized multiple firearms and arrested Matthew Der after acting on a tip about his extremist posts on social media.

A criminal investigation is ongoing into a Carlsbad man who allegedly communicated with the teenage girl who committed a deadly school shooting in Wisconsin last month, with authorities alleging in ...

Alexander Paffendorf expressed regret for his involvement in court on Friday without explaining his precise role.

A California man apologized Friday for his connection to a 15-year-old girl who fatally shot a teacher and fellow student at a religious school in Wisconsin, telling a judge that he was prepared to ...

Alexander Paffendorf appeared in court for a gun violence restraining order. The hearing was continued to April to allow time ...

A hearing for a gun violence restraining order Friday against Alexander Paffendorf, 20, was continued until April ...

A Carlsbad man who authorities say communicated with a Wisconsin school shooter appeared in a San Diego courtroom on Friday.

Meanwhile, the New York Attorney General's Office has argued a state court case involving the potential evacuation of the ...