KANSAS CITY, Mo. -- Students and staff at Van Horn High School in Independence had to evacuate to the school's auditorium after a fire broke out on the roof of the school Wednesday. In a letter to parents and staff, the Independence School District said that on Wednesday morning, workers on the roof of the high school reported a fire. According to ISD, it is believed that the fire originated from an A/C unit which made the school's gymnasium fill with smoke. Pedestrian hit and killed Tuesday night near Swope Park in Kansas City ISD said the fire was quickly extinguished by emergency responders, and students and staff have been moved to the auditorium as part of its normal safety procedures. There have been no reported injuries and the Independence Fire Department has not confirmed if the A/C unit was the cause of the fire. This is a developing story. Stay tuned at FOX4 News for the latest updates and information.