I believe that it's the work of a very disturbed youth gang in India... From the news stories I have read on this, a criminal act is perpetrated as
well (theft), and often, the victims are scared versus attacked... Many have even committed suicide in such fear, as it builds off of many local
myths... Pretty ingenious of the gang really, but also rather disturbing....
Some of the more fantastic feats, can be attributed to fear, as well as multiple gang members similarly attired, and then mistaking one on the roof,
for the one that just vanished on the ground....
[Edited on 5-9-2003 by Gazrok]