access to the gun he's accused of using during the shooting spree that left four students dead. cnn's athena jones has more details from michigan. >> reporter: hi, there. james and jennifer crumbley found hiding in a detroit warehouse early saturday morning. they were arraigned later in the morning, each faces four counts of involuntary manslaughter in the death of the four teens that their son, ethan crumbley, is charged with murdering. each of these counts of involuntary manslaughter carries up to 15 years in prison and a $7,500 fine and mandatory dna collection. it is very, very rare to see the parents charged in a high school shooting case, but oakland county prosecutor karen mcdonald explained why she was making that move. >> both defendants were aware that he was searching ammunition on his phone at school, instead of reacting to that as a concerned parent and worried about safety, mrs. crumbley texted, lol, i'm not mad, just