BROADVIEW HEIGHTS, Ohio (WJW) — Brecksville-Broadview Heights High School was dismissed at 9 a.m. Friday due to a violent threat.

The school was expected to reopen at 1:30 p.m. Friday for students to retrieve their belongings, and for athletics activities, practices and games to continue as scheduled, according to a later update from the superintendent.

“While the alleged threat for violence has not been substantiated, building leaders believe that safety is a priority and that the productivity of the school day has been compromised,” reads the distict’s initial Friday morning announcement on Facebook. “The BBHCSD is acting out of an abundance of caution, in order to keep everyone safe.”

The high school was “thoroughly searched” Friday and was determined to be secure reads an update from Superintendent Joelle Magyar just before 12:30 p.m. Friday. The threat was determined to be non-credible. An investigation is underway.

“The district must treat all allegations of a threat with the utmost seriousness, and this ‘safety first and at all cost’ approach prompted our dismissal of the building earlier today,” Magyar wrote. “We thank our parents, students and staff for their cooperation.”

Friday morning’s staggered release was supervised by Broadview Heights police, according to the post. Student drivers were released first, then bused students were sent home grade by grade.

The district’s middle and elementary schools remained open.

“Students and staff there have been determined to be safe and secure by our public safety team, as the alleged threat was focused at the High School,” reads an earlier tweet from the district.