Norwegian golf course targeted by mystery pooper for 10 years!

For almost ten years, a mystery pooper has been using the golf grounds of Stavanger Golf club in south-west Norway as a toilet. Groundskeeper at the club claims the offender leaves no trace except large poos and a trail of minor disruptions. According to Kenneth Tennfjord, who maintains the green at the club, the mystery guy “has a couple of favourite holes. And we know it is a man because the poos are too massive to be from a woman. In the early years the stools were relatively hard but they’ve changed. Perhaps he’s been taking laxatives or maybe he doesn’t have the best diet”.
During the years, there have been various efforts to catch the culprit. It was said that the club even set up all night flood lights to deter the mystery pooper, but they were mysteriously disabled soon after. Another groundskeeper, Frode Jørmeland, said: "He climbed up a tree next to the lights and wriggled far out on a branch and dismantled the spotlights. How he managed the feat without electrocuting himself or falling is a riddle."
Steinar Floisvik the club manager is of the opinion that it could be someone who for unknown reasons hates the game of golf or alternatively, has a fetish or is mentally unstable.
The golf club have applied for a permit to install a surveillance camera, but the application was denied so they must have another way to trace the culprit.
I just wonder, could it be a ghost? or one of their very own dissatisfied worker?