[Thinkin' Gal]

authorities from both Nepal and India have failed to identify the object, which is said to be active at night and disappears instantly after the attack.

How conveeeeenient.

Could it be... Satan?

[2sheep]

Seriously, this sounds like ball lightening which is well documented.  There is a lot of interest in such phenomena by people who are seriously searching for alternative energy sources such as retired professor of electrical engineering, Dr. Gary L. Johnson.  See at http://www.eece.ksu.edu/~gjohnson/