At least 20 injured in Fla. high school shooting

[guohua]

@"Mystic Wanderer" 

He preened with guns and knives on social media, bragged about shooting rats with his BB gun and got kicked out of school — in part because he had brought bullets in his backpack, according to one classmate. He was later expelled for still-undisclosed disciplinary reasons.

And

Administrators considered him enough of a potential threat that one teacher said a warning was emailed last year against allowing him on the campus with a backpack.

And

Charo, his former classmate, said Cruz had earlier been suspended from Stoneman Douglas High for fighting — and also because he was found with bullets in his backpack. Sheriff Israel said at a news conference that Cruz had been expelled for “disciplinary reasons” but he did not provide any details of what led to that action.

Math teacher Jim Gard remembered that the school administration earlier sent out an email warning teachers about Cruz.
“We were told last year that he wasn’t allowed on campus with a backpack on him,” said Gard, who had him in class. “There were problems with him last year threatening students, and I guess he was asked to leave campus.”

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I guess he was allowed back into school, but not allowed to have a back-pack.