TOMBALL, Texas — Tomball police confirm to KHOU 11 News they are investigating a bomb threat at Tomball High School.
The threat came in by 911 call, the police department says.
All schools in Tomball ISD were briefly in "secure mode" as a precaution so campuses could be checked.
Multiple officers reportedly responded to the high school campus just after 9 a.m. Thursday.
"Tomball Police received an anonymous bomb threat outside of Tomball High School. To be cautious, Tomball High School is currently holding in "secure" mode. All doors are locked, students and staff are inside and classes are being held. Tomball PD is currently investigating."
KHOU 11's Adam Bennett reported that as of noon, the all-clear was given, and all campuses had returned to normal. A police captain says currently there are no suspects or persons-of-interest in the case.