West Midlands Police has dealt with 150 reports of UFO, ghost and witch sightings in the last five years.
Members of the public have contacted the force believing they have witnessed the paranormal activity and while most have required no police action, one call in February 2010 over a reported witch led to an arrest.
More than 40 of the calls were to report ghost sightings, while around 30 were from residents spotting UFOs.
A West Midlands spokesman told the Daily Mail: "While the figures can seem amusing, behind some of these 'supernatural' calls may be a deeply troubled individual or a person wasting valuable police time, which would be better spent preventing real crimes.
"West Midlands Police always take action against those found to be knowingly making false and malicious calls to the emergency services."
Nick Duffy, leading light of West Midlands Ghost, told the Daily Mirror he was once contacted by someone confronted by a polar bear in Walsall.
In another occasion, a woman believed there was a werewolf in her garden.
Duffy said: "She hadn't seen it but had heard growling and scratching around the bins.
"I asked if it could've been dogs."