The work could take weeks, police said. Authorities are also mulling criminal charges, although it's not clear against whom.

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

A California man apologized for his connection with the Madison school shooter. SAN DIEGO - A California man apologized ...

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

A criminal investigation remains ongoing into a Carlsbad man accused of communicating with a 15-year-old girl behind a deadly ...