Police urge farmers to be vigilant after dozens of lambs were stolen in a theft near Harrogate.
Between Thursday 20 and Friday 21 July, about 60 lambs were taken from the Lofthouse area.
It is believed to have happened in the early hours of the morning.
Thieves would have needed transportation such as a cattle trailer or similar to remove such a quantity of sheep.
PC David Mackay, of North Yorkshire Police’s Rural Taskforce, said:
The sheep were marked with red across their shoulders, which may now have faded.
In a separate incident in the Harrogate area, ten lambs were taken from a property on Otley Road near Beckwithshaw.
That investigation is also ongoing.
Inspector Jon Grainge, of North Yorkshire Police’s Rural Taskforce, added:
Over recent years, North Yorkshire Police and surrounding rural forces have taken an increasing number of reports relating to the theft of sheep.
North Yorkshire Police urge people in rural areas to report any suspicious activity to the police, as part of its Call It In campaign.