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

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

A California man apologized Friday for his connection to a 15-year-old girl who fatally shot a teacher and a fellow student at a religious school in Madison.

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

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 accept the consequences of his actions without explaining his precise role.