Alexander Paffendorf expressed regret for his involvement when a judge offered a chance for final words before keeping an ...

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

California man who authorities say was communicating with the suspect in Monday's Madison, Wisconsin school shooting, Natalie "Samantha" Rupnow. The lush foothills of Carlsbad, California ...

Natalie Rupnow, who killed two during a school shooting, was pictured in the shirt at a gun range before the attack. Newsweek ...

A California man apologized for his connection to the 15-year-old shooter who killed a student and teacher in a Madison ...

The student and teacher who were killed in the school shooting in Madison, Wisconsin, have both been named. Teacher Erin ...

A 20-year-old California man was detained for allegedly ... Alexander Paffendorf, of Carlsbad, exchanged messages with Natalie “Samantha” Rupnow, 15, about targeting a local government ...

Wisconsin police said they were not charging the parents of Natalie "Samantha" Rupnow, 15, in connection with a school ...