Watch a report by ITV News Anglia's Russell Hookey
Sixteen sheep have been killed and around thirty others so badly injured they will need to be put down after a suspected dog attack in Suffolk.
Police are appealing for witnesses to the attack in East Bergholt which happened between Sunday 20th December in the afternoon and Monday 21st December at 8am.
The livestock had been grazing in the Dazeley's Lane area. Police believe that dogs off the lead were responsible for the attack which has been described as "by far the worst case" that police have ever seen.
Watch an interview with Sgt Brian Calver from the Rural Wildlife Crime Team
Anyone with information as to who was responsible or who saw dogs off leads in the area at the time should contact Suffolk police, quoting crime reference 37/73715/20.