A three-year-old boy has died in an apparent 'tragic accident' after being hit by a tractor on a farm.
Police and paramedics rushed to the farm, in the rural village of Whatley, near Frome, in Somerset, on Tuesday morning.
The boy was taken to Royal United Hospital in nearby Bath, where he later died.
A spokesman for the Health and Safety Executive (HSE) said the incident was under investigation.
"HSE have been informed and we have started initial enquiries," the spokesman said.
"We are starting the investigation, which will be a joint investigation with Avon and Somerset Police.
"As always, when a fatality is involved the police are leading enquiries at this stage. An inspector has been to the scene. At the moment it is very early days."
Det Sgt Rachel Whelan, of the Public Protection Unit, said: "Our thoughts are very much with the boy's family, who have been left distraught by his death.
"A multi-agency investigation is under way in accordance with national rapid response protocols following the unexpected death of any child.
"At this time we are treating this as a tragic accident."
A spokesman for South Western Ambulance Service confirmed they were called about the incident just 10.30am and responded with four ambulances crews and the air ambulance.