The gist of the matter still seems elusive, but here is a video from the vicinity of Zarozje.
According to the Associated Press:
'Richard Sugg, a lecturer in Renaissance Studies at the UK's University of Durham and an expert on the vampire legends, said the fear could be very real. Stress can bring on nightmares, which makes people's feelings of dread even worse.
"The tourists think it is fun — and the Serbian locals think it's terrifying," he said.'
Sugg is the author of Mummies, Cannibals and Vampires: the History of Corpse Medicine from the Renaissance to the Victorians and is currently writing Faces of the Vampire: from Holy Terror to Sexual Taboo.