Wheaton police are investigating an alleged threat called in to Wheaton North High School, authorities said.

The police department and school officials have placed the school on secure-and-teach status while an investigation is conducted. At this time there is no active threat.

Longfellow, Sandburg, Washington and Hawthorne elementary schools are also on a secure-and-teach status.

Police are asking individuals to avoid coming to the school to allow police to conduct their investigation. More information will be provided as it becomes available.