Six bodies have been discovered on a dairy in Colorado plains, in a tragedy currently being described as 'an accident.'

Rescue crews entered a confined space at the dairy Wednesday and recovered the bodies, the Southeast Weld Fire Protection District said.

Weld County Sheriff's Office spokeswoman Melissa Chesmore said her agency also responded Wednesday to an emergency at the dairy.

'We didn´t find anything criminal in nature,' she said. 'It looks like an accident.'

She didn't elaborate on the nature of the emergency or say where exactly the bodies were found, referring questions to state occupational safety regulators.