Around 25-30 cattle were stolen from a farm on the outskirts of Keady earlier this week.
Police are appealing for information following the theft from the Crossnenagh Road area, close to Derrynoose.
It is understood the incident happened overnight on Tuesday.
This is the latest incident in this area, which has been blighted by thefts in recent years.
Only last September a farm was targeted by criminals who stole a range of items, including a Massey Ferguson Tractor.
There were two other thefts in the area in August and October 2014.
The removal of 30 cattle would have involved a large livestock trailer and a degree of organisation.
Sinn Fein councillor Darren McNally said: “There have been a number of criminal gangs involved in this activity in recent years but recent successes on both sides of the border by Garda/PSNI had put a dent in their operations.
“However, this incident shows that the rural community can never become complacent and need to be on constant alert for strange movements of cattle trailers or equipment in the middle of the night, these criminals don’t care whose livelihood they destroy.”
If you have any information which might help police with the inquiries please contact 101.
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