Alligators loose NorfolkWorried holidaymakers and fishermen are now keeping watch for the pair at 60-acre Waveney Valley Lakes in Wortwell.
Park manager Dave Potter, 58, said: "It has caused quite a stir. We have 90 plots for caravans and lodges, so there are a lot of people here. The police had a good look around but didn't find anything."
Norfolk Police said a member of the public reported the alleged sighting. It added: "One of our officers visited the owners of the venue to make them aware of the claim."
No one knows how the creatures may have got there. Alligator expert Dr Laura Brandt said: "It is possible they have been released or have found their way to the water."
She warned: "They will eat anything that moves."