Police searched the school for explosives and are planning a second search . A woman who answered the door at the house believed to belong to Acord 's mother told CNN affiliate KATU that she has no comment . Prosecutor : " The suspect is in custody, but we don't know if he has any accomplices. The teen hid explosives in a secret floorboard compartment in his bedroom , the DA says . The bombs were made with napalm , drain cleaner and flammable liquids , authorities say .
Police searched the school for explosives and are planning a second search . Prosecutor : " The suspect is in custody, but we don't know if he has any accomplices. The teen hid explosives in a secret floorboard compartment in his bedroom , the DA says . The bombs were made with napalm , drain cleaner and flammable liquids , authorities say .