In an email message Thursday, St. Charles East High School Principal Jim Richter reassured parents that a student’s gun threat at dismissal was unfounded.

“The investigation of the safety threat has been completed,” according to Richter’s email. “All students and staff are safe, and East has been released from our safety hold.”

Prior to dismissal, the school received a report of a threat made by a student.

“Our investigation, conducted in conjunction with the St. Charles Police Department, included interviewing students, searching backpacks, lockers and buses,” according to Richter’s email. “Investigators have deemed the report as not credible.”

Students who drive or walk can now leave the campus.

Bus routes were delayed. For those students taking the bus home, buses were scheduled to depart about 4 p.m.

Students who were awaiting buses were to be supervised in the Main Commons, or parents could pick them up, according to the email.

“I want to commend our students and staff for their patience and cooperation this afternoon,” according to Richter’s email. “Thank you as well to our school community who demonstrated our, ‘If you see or hear something, say something,’ commitment to safety.”