Armed police are investigating what is being described as a "serious incident" at a travellers' site in Peterborough. Three people have been injured, two of them seriously. All three have been taken to hospital.
The travellers' site is on Oxney Road on the outskirts of Peterborough.
More top news
A coroner has ruled Addenbrooke's hospital in Cambridgeshire is not guilty of gross negligence following the death of a Norfolk grandfather
The employee was sorting through rubbish at waste company Amey's Waterbeach facility.
Ice is expected to form on some surfaces from late Tuesday afternoon and last overnight into Wednesday morning.