Two students from Northwest ISD were arrested Wednesday after parents alerted officials about a document containing threats toward students and teachers.

The district was alerted by a parent who raised concerns after “an online document detailing a planned attack on students and staff” was discovered, according to a statement from Northwest ISD, WFAA reported.

Shared among some students, the document included a “watch list” of targets and a plan to carry out an attack on 25 students and seven staff members at Wilson Middle School.

The district said that the document “mirrors similar terroristic threats issued at schools across the country,” according to WFAA. Northwest ISD alerted the persons listed on the “watch list,” which was purportedly the work of several students.

In a letter to families and employees, the district said, “All students involved in the creation and modification of this document will be held accountable to the fullest extent of the law,” reported the Fort Worth Star-Telegram.

“It’s not worth the stress, it’s not worth his life,” Rebecca Combs told WFAA. She had kept her child home from school on Thursday.

“It’s alarming. I don’t think I’m going to send him to school the rest of the year,” she said.

A district spokesperson told WFAA that 14% of students did not show up for class on Thursday.

The district has made plans to add additional security and counselors for the rest of the school week.

“Northwest ISD is partnering closely with the Fort Worth Police Department for an ongoing investigation of the situation, and we are grateful for their support,” the district said, per WFAA. “We are also appreciative of the parent who alerted us of this concerning document, as that allowed us to immediately respond. Our district values transparent communication, and we will continue to keep families informed about the process of this investigation as new details become available.”

The two students were arrested in connection with the document and are facing felony charges, according to NBC 5 DFW.

Fort Worth police are asking anyone with additional information to contact them at 817-392-4222.

A similar threat happened at another school in Tarrant County this week, as covered by The Dallas Express. Carroll High School and Carroll Senior High School were closed on May 1 due to a reported threat.

The threat came in the form of a message written on a bathroom stall door that referred to the STAAR test and a potential school shooting, per a news release from the Southlake Police Department.

The threats follow a recent school shooting at a Dallas ISD campus, which prompted students and community members to call the district out for its purportedly lax safety measures, as previously reported by DX.