Lincoln holidaymakers have been turned away after a group of unauthorised campers pitched up on the pre-booked campsite at Hartsholme Country Park.
The group of 15 caravans arrived at the park at 10pm Tuesday, August 19 and allegedly offered to pay for the pitches.
The park has had to cancel bookings with scheduled campers and staff having to reimburse fees.
Toilet blocks have been vandalised since August 19 and litter is mounting at the campsite.
The City of Lincoln Council, Lincolnshire Police and Lincolnshire County Council are discussing the next course of action after conducting an assessment.
Dave Charysz, Open Spaces Officer at City of Lincoln Council, said: “We are aware travellers arrived on the campsite at Hartsholme Country Park late on Tuesday night.
“We carried out an initial needs assessment on Wednesday morning and we are liaising with the police and the County Council about what action to take.
“We will consider the options in accordance with the Joint Protocol on Unauthorised Encampments in Lincolnshire.”