Firefighters and medics were sent to the Nebraska Precast plant a little after 10 a.m. Tuesday. One person was pinned under a concrete form used to make livestock feed bunks.

Fire Chief Dan Miller says one worker was declared dead at the scene and four others were taken to a hospital. None of their names have been released.

The accident is being investigated.

Nebraska Precast makes precast concrete products for agricultural, construction, landscaping and utility applications.