The ufo came from above just like an aircraft does but with a steep decend it came near the tower on the overbridge. initially it seemed that some flying object is going to fall down. when it came near the tower, it flew horizontally to and fro hovering near the tower. it went back the tower and vanished for few seconds. then all of the sudden, the ufo came in sight and shooted up vertically in the sky in a tremendous speed just like a rocket.