Cumbria and Durham police say they have successfully disrupted a threat of serious violence at the Appleby horse fair.
They say that following a successful operation twenty people were arrested on suspicion of conspiracy to cause grievous bodily harm as they travelled into the area.
The police are appealing to people not to bring their disputes to the event, which attracts thousands of people.
More top news
A look ahead at the forecast for the Border region.
An undercover Trading Standards tobacco and alcohol sales operation has shown that local businesses are refusing to sell to underage people.
The Jim Clark Rally is changing the format, this years event on Sunday 31st May will run on private Forestry Commission gravel roads.