I was observing orion constellation (the three kings) around 4:30 am IST, i noticed a bright star just below the three kings in NE direction and then suddenly near & below the star i saw a big flash, initially i thought that it might be another star which is emitting light but it was a big flash near the star just like you switch a big blub on and off within sec's, then after few sec the object appeared in the sky, to my naked eye it appeared like a distant small star suddenly it started moving, it started moving towards E within 25 sec or so it disappeared, then reappeared after some time about 15-20 min and this time it changed its course and went towards NE position from that star and again after some time within 25 sec it disappeared from the night sky. What ever that was it was not near to the earths surface but some where deep in the sky because the object appeared small and initially gave me a impression of a star.