LAWTON, Iowa (AP) — Authorities say a fire broke out at a school building in northwest Iowa about an hour after classes were done for the day.

The blaze was reported a little after 4:45 p.m. Tuesday at the Lawton-Bronson High School and Junior building. District Superintendent Randy Collins says the fire started in a rack of laptop computers inside the business classroom. No injuries were reported.

Collins says no classes will be held in the Lawton building Wednesday.