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

Alexander Paffendorf was detained late last month after FBI agents said he was plotting a mass shooting with Natalie "Samantha" Rupnow.

Paffendorf allegedly shares the same aversion to government as his mother — the 20-year-old has been accused of planning a ...

A judge granted a protective order against a Carlsbad, California, man who authorities allege was communicating with the ...

Carlsbad Police filed the application for a gun violence emergency protective against Alexander Charles Paffendorf in San ...

The teenage girl who killed a teacher and fellow student at her Wisconsin school this week was in contact with a California ...

Authorities say Alexander Paffendorf told the Madison school shooter he planned to attack a government building.

An emergency restraining order requiring the man to surrender his firearms to authorities identified him as Alexander Charles Paffendorf, 20. The order, issued under California's gun red flag law ...

The information was provided in a gun violence emergency protective order filed against 20-year-old Alexander Charles Paffendorf, who authorities believe had been in contact with Natalie ...

Carlsbad police filed the application for a gun violence emergency protective order against Alexander Charles Paffendorf in San Diego County Superior Court on Tuesday. FBI agents "stopped and ...