Police are investigating a report of 800 lambs stolen from a North Canterbury farm.
Farmer Maury Leyland posted on Twitter about the theft on Friday and asked for information.
"Beyond gutted, we have had rustlers on our farm in [North] Canterbury," she said in the tweet.
"Hundreds of sheep stolen. Yards, dogs, and truck must have come in. Someone must have seen something."
Police said they received a report on Sunday that 800 lambs were missing from a property in Hurunui District.
They provided security advice to prevent further livestock loss and were making enquiries, they said in a statement.