Very interesting.
He kept a private journal where we wrote, "“I’m preparing myself for the school shooting. I can’t wait.....I can’t wait to walk into that class and blow all those f‑‑‑ers away.” He had written in his journal about making pressure cooker bombs “and where and in what order he would be placing his explosives,” according to the court records.
His grandmother turned his journal over to police.
Police found a rifle, and grenades in his room.
He is currently being held on charges of
attempted murder in the first degree, robbery and assault on an officer, according to online booking records. He recently robbed a convenience store.
It's interesting that your private thoughts in a private journal can be used to charge you with "attempted murder".
The arms and ammo make it extremely likely he intended to act on the "thoughts" in the journal. The journal alone wouldn't be a problem - people such as crime writers probably keep journals where they record the thoughts of their villains... I can think of some writers whose notes would be pretty dark material and ordinary people may also keep stuff which they wouldn't want anyone else to read - but in this instance I really think the gran's concerns are justified and he'd even selected the place.
The journal is additional evidence but probably not enough on its own to show intention.