Emergency personnel responded to Montini High School in Lombard around 10:15 a.m. this morning after "a bomb threat was found at the school," according to a press release by the DuPage County Sheriff's Office.
The school was evacuated and nothing was found.
Students were allowed back into the school around 12:10 p.m. The incident remains under investigation.
It's the second bomb threat found at the school in the past three months. A bomb threat message was found on a bathroom wall Nov. 9, according to Suburban Life.
Nothing was found in that incident, as well.