Evacuation as derailed train cars explode in Iowa

(CNN) - Union Pacific technicians are preparing to remove cars following a train derailment and fire in northwestern Iowa on Sunday, Union Pacific spokesman Robin Dieser said Monday.

“We know the affected cars are carrying hydrochloric acid, potassium hydroxide and asphalt,” Dysver said in an email to CNN.

The train derailed at 2 a.m. Sunday in Sibyl, Iowa. It is estimated that 47 cars were affected, Daiswar told CNN affiliate KMEG. No injuries were reported to train crews, Dysver added.

Voluntary eviction orders are in effect. In addition, the Sibyl-Occidental Community School district runs late entry hours, the district said in a Facebook post.

Dysver said the cause of the derailment is under investigation. Authorities point out that the fire was caused by diesel KTIV, A CNN affiliate, and a bridge collapsed, tracking the track.

For people who do not leave, the Ossiola County Sheriff’s Office a Post on Facebook It said “Residents are advised to open the windows on both sides of their houses and stand in their center.”

“This is a safety measure in the event of a car explosion,” the sheriff’s office wrote.

KTIV said waterways in the area were blocked.

Contact CNN Sheriff’s Office and the District Emergency Management for more information.