....A law enforcement source with knowledge of the investigation told CNN on Saturday that the gunman had suffered mental health issues. A couple of years ago, he was hospitalized for treatment after allegedly talking about harming someone, according to the official.
It's not clear whether the state government or his family committed him for treatment or whether he committed himself. It's also unclear under what circumstances he was released
...Given that gunman was wearing a ballistic vest and heavily armed, "I would say it's premeditated," said Seabrooks, who estimated that the shooter had some 1,300 rounds of ammunition during the spree.
....He was carrying an "AR-15 style rifle," pistols and "more clips for the rifle," Lewis said.
...Jasmine Franco's friend had left the room to fill his water bottle and she was sitting alone when she first became aware something was wrong. "You could hear rumbling, a lot of rumbling, it sounded like an earthquake or something," she said, referring to the sounds of gunfire mixed with the footfalls of people running.
But her 11 classmates and the teacher appeared oblivious, and continued their banter until her friend burst back in. "His whole face was red and his veins were coming out of his neck, he was trying to calm himself," Franco said.
...In a hallway, she saw a dark-haired man in
black combat boots
who she initially thought was a police officer, but quickly realized was the shooter. The man was walking quietly and casually.
