Droves of young yobs caused carnage at the site of a former Scots hospital sparking a huge police response.
Officers are reporting a spike in calls to the Strathmartine area of Angus, including a derelict building that used to be Strathmartine Hospital.
Over 30 youngsters were caught drinking, setting fires and driving off road bikes on the site and surrounding area over the weekend.

Cops were drafted in from Dundee to help control the chaos as Scotland remains under tight coronavirus restrictions.
Tayside Police shared images of the cops patrolling area to alert locals to the site.
The parents of those involved are being notified.

Police are urging parents and guardians to 'take an interest in what their children and are doing and where they're going' and to dissuade young people from heading to the area.
Sergeant Stewart Ramsay said: “Officers have attended a number of calls to the grounds of Strathmartine Hospital and surrounding area regarding the behaviour of some young people.
"Not only is there the issue of antisocial behaviour but the buildings themselves are in a derelict state and are a potential safety risk to anyone who enters them.
"Officers will continue to carry out regular patrols in the area however I would appeal to parents to take an interest in what their children are doing and where they are going and help discourage young people from entering the site.”
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