Police were alerted to the case on Monday morning after the sheep were injured on Friday.

Officers have been told the dorper sheep were in a paddock off Beeson Rd about 7.20pm on Friday when a large dog and a smaller sausage dog got into the area and attacked the sheep.

Three sheep were killed instantly while four others were injured, including one which was expected to be euthanased after suffering a broken leg.

The dogs have not been found.