Officials in West, Texas, say there is no evidence of criminal activity in last week’s explosion at a fertilizer plant.
The plant explosion killed at least 14 people, injured 200 and left hundreds of people without homes.
West Mayor Tommy Muska has said that 10 of the 14 who died were first responders.
It’s one of the worst industrial accidents in years.
Students in West returned to school today.
Students up to sixth grade were dropped off Monday morning at West Elementary School, which was outside the immediate blast zone. Some classes were to be held in trailers behind the building.
Middle- and high-school students were bused to a nearby school district, which turned its old, vacant intermediate school building into a temporary high school.
West assistant superintendent Jan Hungate said some teachers at work Monday had not yet been home.
The Associated Press contributed reporting to this article.
This segment aired on April 22, 2013.