Black triangle UFO heading North west on nallapadu, near Guntur, Andhra Pradesh, India. 1 witness.The event happened on 28-05-2012 at 10: 40 PM. I was yet to sleep on the top of my house. I was watching stars in the dark blue night sky. (not black or no heavy clouds). I suddenly noticed a black triangular object with three triangular white lights at its corners. The white glow of the lights is homogenous similar to artificial satellites, but not irregular as how the moon appears. I mean that the light emitted at the 3 corners is plane. It was neither too far nor near for my vision, but the black triangular object with its edges clearly separated its vision from the dark blue sky. (Bluish black sky). Heading to North-west on Nallapadu near Guntur in the state of Andhra Pradesh, India it remained clear for 6- 8 seconds and disappeared for my vision. Size of appearance is the size of a helicopter at heights of 2.5- 3.5 kilometers, I guess. Just Completed bachelors program in aeronautical engineering, I was clear what I noticed in the sky with a clear eye-si! ght (21 year old). I confirmed it was not an airplane as it is in triangular shape and also makes no audible sound. I confirmed it was not a group of 3 white coloured birds as the lights appeared are homogeneous and triangular and by the black triangular edge, shows it was a single object. Nothing more special I noticed.