Collier county public school schools closed Monday, leaving about 100 students without a classroom.

Some students in the county’s schools said they were told they would be able to use their phones during class.

The Collier school district says that because of the lockdown, students are being placed in special classes and are unable to do homework or attend regular school activities.

The lockdown started at 7 p.m.

Monday at the Collier High School campus.

Many students were not in their classrooms and some who were were, said Collier Public Schools spokeswoman Emily Clements.

The district says they’re asking anyone who sees anything suspicious or has concerns to call the school.

They also encourage students to report anything suspicious to 911.

A school district spokeswoman says the lockdown was brought to a halt by a report of a shooting.

The lockdown has since been lifted.