The teenage girl who killed a teacher and fellow student at her Wisconsin school this week was in contact with a California man who was planning his own mass shooting, according to California court records.

At the request of law enforcement officials, a judge ordered a man, who reportedly corresponded with the shooter about a second attack, to surrender his guns.

According to multiple news outlets, a judge issued a restraining order Tuesday to a Carlsbad, Calif., man who revealed to FBI agents that he told 15-year-old Natalie “Samantha” Rupnow he was planning to target a government building.