The vigilantes say they chased the men, but one escaped and the other used black magic to turn himself into a goat.
A police spokesman said they were unable to verify the story, but said they'd hold the goat but they won't prosecute the animal until "it can be proved scientifically that a human being turned into a goat."
A few years ago, witchcraft was suspected when men's penises began to disappear in Nigeria:
... hundreds of members of the evangelical sect Brotherhood of the Cross went to the town of Ilesa for their annual convention.
While the sect members were on a house-to-house preaching mission, someone raised an alarm that his penis had disappeared.
An angry mob descended on the visiting evangelists and burnt eight of them to death. Two buses and a car were also burnt.