Many students in Taft wonder if Thursday's shooting at their school could have been avoided. They point to warning signs online, long before shots were fired.
As investigators continue to piece together the suspected gunman's motive, 17 News got a look at some of the revealing tweets that foreshadowed the tragedy at Taft Union High School.
Students took to Twitter last month, to tweet their worries about 16-year-old Bryan Oliver.
A girl who identified herself as 'Allie Who' wrote " If Brian Oliver shoots up the school, I swear to God. I have like four classes with him."
As students returned to school Friday to pick up their belongings, some had seen the tweets online.
"I feel unsafe about it. I don't like it at all," said Tara Kelley.
" It makes me kind of uneasy. It's unsettling, but what can you do?" asked Ashley Carr.
The disturbing tweets are from December 15th, almost a month before students say Oliver walked into a classroom and opened fire.
Another student on Twitter wrote "He made a hit list. Why is he still allowed in school and he always talks about murder like he's obsessed with it."
The girl goes on to say "Yeah, he told Bowe (the victim of the shooting) that he watched five serial killer movies and thought of Bowe the whole time... creepy."
17 News wanted to know if the school monitors social media. Did they know about these tweets? But, the district wasn't talking Friday.
"They check all of our Twitters and our Facebook, and if you get caught doing something you get called up to the office," said student Meghan Clark.
"You can't hide anything from this school," explained Kelley.
"The vice principal and the supervisors, they go through it," noted Carr.
Students told 17 News Oliver was caught last year with a hit list and was suspended for a few days. Investigators could not confirm the list.
"I heard about it when I moved here, but I thought he was just a kid messing around, ya know?" said Juan Barbosa.
"Everybody knew about it. I honestly don't think someone who chooses to openly voice that they want to cause other students ill will, should not be able to be re-admitted to the school," said Carr.
Sierra Curry told 17 News she was on Oliver's hit list. She said the shooting was especially hard on her. We asked Curry what she thought when she heard Oliver was the suspected gunman.
"He was coming to get me. I was still on his list. That I was the next one," she explained.