CARPENTERSVILLE, Ill. — Dundee-Crown High School was placed on lockdown Wednesday morning due to a false “swatting” call, police said.

In a message to parents and students, Supt. Susan Harkin said all students and staff are safe.

Kane County Sheriff Ron Hain told WGN News they believe the incident was a false call, known as “swatting.” The lockdown was implemented at around 9:10 a.m.

The “swatting” call appeared to be originating out of California, according to investigators.

Students and staff were outside of the building waiting for it to be cleared by police. Just after 12:05 p.m., the lockdown was lifted.

Students and staff have been directed to return into the building.

“For the remainder of the day, Dundee-Crown will remain open in a shelter in place. Students will remain in the field house, cafeteria, or gym during this time. Support services will be provided to any student who may need them. Food services will be available for students. The school will dismiss at the normal time, with normal bus services available for students who take district transportation,” Supt. Susan Harkin said.

Anyone who wants to pick up their child from the school can. The following reunification process is in place.

• Enter the school area by the junior parking lot, which is by the tennis court entrance.
• The middle entrance of the parking lot will be blocked off.
• From the tennis court area, you will pick up your student and then exit via the south exit by making a right turn only onto Kings road.
• Please bring your ID with you when you come to pick up your student.

“It was terrifying knowing your child is in there and you don’t know what’s going on,” a parent said.

SkyCam9 at the scene showed a large police presence with students beginning the exit the building at around 10:08 a.m.

The lockdown was instituted as a precautionary measure, Harkin said.