(CBS) — The Cook County Sheriff’s Office says a man is in custody after 13 car windows were damaged in the parking lot of a school in La Grange.

The sheriff’s police say they received a report at approximately 12:25 p.m. of a man smashing the windows of vehicles in the parking lot of the Kensington School, a preschool and kindergarten.

In an email to parents, the school said that the incident occurred around the time preschool students were being picked up and dropped off.

The sheriff’s office says the school was put on lockdown. No one was reported injured.