Police are investigating the theft of 23, four month old lambs, from a field in the Castledamph Road area of Plumbridge.
The theft was reported to police on Tuesday 19th September, however, it is believed that the theft occurred sometime within the last month.
The lambs are not tagged due to their age and have been marked with blue to the back of the head and rump.
Constable Robinson would appeal to anyone who may have noticed any suspicious activity or vehicles in the area to contact police in Strabane on the non-emergeny number 101, quoting reference number 430 on the 19/09/17.
Alternatively, if someone would prefer to provide information anonymously they can contact the independent charity Crimestoppers on 0800 555 111