The teams set out to curb unruly behaviour in the evenings

Teams of officers descended on three areas on Friday night - Colwyn Bay, Holyhead and on the Redhall estate in Connah's Quay - to provide a highly visible presence.

The exercise, called Operation Visibility, was repeated on Saturday night.

The work is part of a project called Dyna Ddigon, or That's Enough.

The force launched the campaign in July 2003 in Caernarfon, Kinmel Bay and Connah's Quay with the aim of showing the public it would not tolerate so-called yob culture.

Their on-going operations show that it's not an empty threat David A'Herne

A total of �70,000 has been awarded to North Wales Police by the Welsh Assembly Government for the campaign.

The three locations targeted on Friday are considered priority areas in the fight to cut loutish and anti-social behaviour.

North Wales Police Deputy Chief Constable Clive Wolfendale said: "This operation is part of our overall strategy for Dyna Ddigon and we will be doing lots more in different parts of north Wales in the coming months."

David A'Herne, the Crime Reduction Director for Wales, welcomed the latest exercise.

He said: "North Wales Police are at the forefront of the drive against anti-social behaviour, and the Home Office fully supports its on-going crackdown.

"They have a clear message 'That's Enough' and their on-going operations show that it's not an empty threat."