California man Alexander Paffendorf, 20, detained after allegedly ‘plotting’ coordinated attack with Wisconsin school shooter Natalie ‘Samantha’ Rupnow

Alexander Paffendorf, of Carlsbad, exchanged messages with Natalie “Samantha” Rupnow, 15, about targeting a local government building while she planned to shoot up the Abundant Life Christian School in Madison, according to a gun violence restraining order obtained by CBS 8.