NASHVILLE, Ark. — One Tyson Foods Inc. says worker is unaccounted for following the collapse of a grain silo at the company's feed mill in Nashville in southwestern Arkansas.

“We’re working with state and local emergency response officials who are investigating a grain silo collapse at our Nashville feed mill,” company spokesman Gary Mickelson said. “The collapse happened about 2:30 a.m. Thursday and one of our team members who was on the job at that time is currently unaccounted for.

“Howard County Emergency Services, the Arkansas Department of Emergency Management, the Howard County Sheriff’s office and local fire departments are currently at the scene, helping us address this unfortunate situation,” he added. “We will provide more information as it becomes available.”