There will be extra police patrols at a park in north Manchester this week following concerns revellers are planning to host a party.The event has been advertised to take place in Boggart Hole Clough, in Blackley, where police have already prevented a number of pre-planned raves from happening.In a post on Facebook Councillor Hannah Priest, who represents the Charlestown ward, told residents there will be a visible police presence in the area after police and Manchester City Council were made