UFO News Article:
“UFO mystery in Kolkata air”, 1 February 2011
(Deccan Herald, Bangalore, India)

Pilots of five aircraft sighted a UFO over the West Bengal-Bihar border area on 26 January 2011, according to the Deccan Herald:

http://www.deccanherald.com/content/134019/ufo-mystery-kolkata-air.html

The pilots reported that the unknown object descended at a great rate of speed.

Map of India (nationsonline.org image)