Authorities are doing a “methodical search” and are working closely with several local police departments and the Bureau of Alcohol, Tobacco, Firearms and Explosives, Arlington police tweeted.
FBI agents from the Dallas field office are also on the scene, but Arlington police is the lead agency, an FBI spokesperson said.
Timberview High School, near Dallas and Fort Worth, had 1,895 students enrolled during the 2019-20 school year — the latest year of publicly available data, according to the National Center for Education Statistics.
Students will be bused to the parent reunification point once the school is “completely secured,” the department said. Officers will be at the reunification point.
This is a developing story and will be updated.