A woman has died after becoming trapped under a trailer which was being pulled by a tractor in a Lincolnshire field.
It happened at about 06:00 BST off the A52, Main Road, in Leverton, near Boston.
Ambulance crews were called to the scene, but the woman, who was working in the field and believed to be in her 40s, died from her injuries.
The Health and Safety Executive (HSE) has been informed and will work with police to conduct an investigation.
Dick Holmes from Lincolnshire Police said: "We are in the process now of tracing and informing her relatives and friends."