The halls of Seagoville High School fell under a shadow of fear in 2017 when a world history teacher was arrested for threatening to kill administrators if he and a colleague didn’t receive a raise. The case of Omar Alanis, 29, stunned a community accustomed to seeing its educators as trusted mentors, leaving students, parents, and staff grappling with how such a crisis could unfold inside their neighborhood school.
Alanis, who had only been employed by Dallas ISD for a few months, sent a series of emails from his school account to the principal and other administrators, police said. According to an arrest warrant affidavit, he demanded that he and another teacher be paid the district’s Master Teacher Salary and be given back pay dating to the previous August. If they didn’t comply, the message warned, they wouldn’t want to “burn alive.” A follow-up email stated that anyone who failed to meet his demands would be “put down immediately by Dallas PD,” and attached an image of armed officers.
The threats, sent around the start of the spring semester, triggered an immediate law enforcement response. Dallas ISD police added extra officers to the campus while they searched for Alanis, who had gone missing for nearly a week. The sight of heightened security on an otherwise ordinary school day left students on edge and parents demanding answers, though officials released little information at the time.
Police documents later revealed the full scope of the messages. When Alanis finally resurfaced at his home on a Saturday, officers made contact. In a voluntary interview, he admitted multiple times to sending the emails. He told investigators he was standing up to the administration to force change on teacher pay, something he felt was necessary.
But to his family, the man who sent those threats was not the brother they knew.
“You know, there’s a back story to that,” his sister, Arlene, said at the time. “As far as we’re concerned, he’s not mentally stable at this point. He had some sort of mental breakdown. My grandpa passed away recently, so that might have triggered that.”
The family had spent a frantic week not knowing where he was. When Arlene saw him after he was located, she barely recognized him.
“He was very unlike himself when I saw him,” she said. “I was just like, ‘that’s not my brother.’ … We’re getting our brother the help he needs. He’s not a terrorist. There’s no need for anyone to be afraid of him.”
Alanis was arrested and charged with making a terroristic threat. He was placed on administrative leave pending the outcome of the investigation and booked into jail before being released on a $1,500 bond. Shortly after, his sister said he remained hospitalized for a psychiatric evaluation.
In the years since, the incident has lingered as a sobering reminder of the pressures that can simmer unseen behind classroom doors. The extra security has long since lifted, but the memory of that week—the tense emails, the added officers, the missing teacher—remains a chapter the Seagoville community won’t soon forget.
For a neighborhood where school pride runs deep and tradition binds families together, the teacher’s threat rattled far more than just an administration building. It shook a fundamental sense of trust, leaving many to wonder how such a cry for help turned into something so menacing, and how a classroom once dedicated to world history became the starting point for a story that felt too close to home.
